Clinical Trials: SEARCH[Study] TILT[Study:StudyFirstPostDate] AREA[BasicSearch] iron absorption
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NCTID/Status
Study
Last Changed
1
NCT03894358
Recruiting
Recruiting
Iron Absorption From a Wheat-based Instant Cereal:Gut and Stable Isotope Studies in Kenyan Infants
Conditions: Iron Absorption; Gut Microbiota
Intervention: FeFum And 7.5 G Prebiotic Mixture, FeFum And 3 G Prebiotic Mixture, Fefum And No Prebiotic Mixture
Conditions: Iron Absorption; Gut Microbiota
Intervention: FeFum And 7.5 G Prebiotic Mixture, FeFum And 3 G Prebiotic Mixture, Fefum And No Prebiotic Mixture
September 17, 2019
2
NCT03586245
Completed
Completed
Iron Absorption From Iron Enriched Aspergillus Oryzae in Females Using Stable Isotope Methodology
Conditions: Iron Absorption
Conditions: Iron Absorption
July 19, 2018
3
NCT01493297
Completed
Completed
Effects of Vitamin A and Carotenoids on Iron Absorption
Conditions: Iron Absorption
Intervention: Labeled Iron Solutions
Conditions: Iron Absorption
Intervention: Labeled Iron Solutions
January 22, 2014
4
NCT03310203
Completed
Completed
The Relation Between Adiposity, Inflammation, Glycaemia and Iron Absorption
Conditions: Iron Absorption
Intervention: Iron
Conditions: Iron Absorption
Intervention: Iron
January 10, 2019
5
NCT03453918
Completed
Completed
Effects of Polyphenols on Iron Absorption in Iron Overload Disorders.
Conditions: Dysmetabolic Iron Overload Syndrome; Genetic Hemochromatosis; Iron Absorption; Polyphenols
Intervention: Polyphenols, Placebo
Conditions: Dysmetabolic Iron Overload Syndrome; Genetic Hemochromatosis; Iron Absorption; Polyphenols
Intervention: Polyphenols, Placebo
March 29, 2019
6
NCT01162616
Completed
Completed
Polyphenols in Sorghum and Iron Absorption
Conditions: Iron Absorption in Presence of Polyphenols
Intervention: Labeled Iron Solutions
Conditions: Iron Absorption in Presence of Polyphenols
Intervention: Labeled Iron Solutions
July 3, 2012
7
NCT01347905
Completed
Completed
Changes in Iron Absorption and Availability Before and After Weight Loss in Obese Pre-menopausal Women and Men.
Conditions: Obesity
Intervention: Stable-isotope Techniques
Conditions: Obesity
Intervention: Stable-isotope Techniques
June 5, 2015
8
NCT02745925
Completed
Completed
Mechanism of Decreased Iron Absorption in Obesity: Controlling Adiposity-related Inflammation
Conditions: Obesity
Conditions: Obesity
October 3, 2019
9
NCT01443832
Completed
Completed
Iron Absorption From Iron-fortified Fonio Porridge: a Stable Isotope Study
Conditions: Iron Deficiency
Intervention: Fe57 And Fe58-FeSO4 Stable Isotopes
Conditions: Iron Deficiency
Intervention: Fe57 And Fe58-FeSO4 Stable Isotopes
October 29, 2011
10
NCT03617575
Completed
Completed
The Effect of Lactoferrin and Dosing Regimen on Iron Absorption From a Maize-based Porridge in Kenyan Infants
Conditions: Iron-deficiency
Intervention: Apo-Lactoferrin, Holo-Lactoferrin, FeSO4, 1. FeSO4, FeSO4 After 1 Day Break, FeSO4 After 2 Day Break
Conditions: Iron-deficiency
Intervention: Apo-Lactoferrin, Holo-Lactoferrin, FeSO4, 1. FeSO4, FeSO4 After 1 Day Break, FeSO4 After 2 Day Break
June 7, 2019
11
NCT03457701
Recruiting
Recruiting
Oral Iron Absorption Study
Conditions: Anaemia
Intervention: Daprodustat, RhEPO, Ferrous Sulfate Containing The Stable Iron Isotope (57Fe), Ferrous Sulfate Containing The Stable Iron Isotope (58Fe)
Conditions: Anaemia
Intervention: Daprodustat, RhEPO, Ferrous Sulfate Containing The Stable Iron Isotope (57Fe), Ferrous Sulfate Containing The Stable Iron Isotope (58Fe)
November 18, 2019
12
NCT04163406
Not yet recruiting
Not yet recruiting
The Effect of Human Milk Oligosaccharides and Galacto-oligosaccharides on Iron Absorption in Kenyan Infants
Conditions: Anemia, Iron-deficiency
Intervention: Ferrous Fumarate, Ferrous Fumarate + GOS, Ferrous Fumarate + HMOs
Conditions: Anemia, Iron-deficiency
Intervention: Ferrous Fumarate, Ferrous Fumarate + GOS, Ferrous Fumarate + HMOs
November 11, 2019
13
NCT01489007
Unknown status
Unknown status
Iron Absorption in Vegetarian Children
Conditions: Iron Absorption
Conditions: Iron Absorption
March 25, 2015
14
NCT01483092
Completed
Completed
Effect of Inulin on Iron Absorption in Humans
Conditions: Iron Absorption; Gut Bacteria
Intervention: Inulin, Maltodextrin
Conditions: Iron Absorption; Gut Bacteria
Intervention: Inulin, Maltodextrin
June 6, 2013
15
NCT01216709
Unknown status
Unknown status
Iron Absorption From Infant Formula and Iron Drops in Infants (MJAU-studien)
Conditions: Infant; Dietary Supplements; Food, Fortified
Intervention: Ferrous Sulfate, Iron-fortified Infant Formula (12.4 Mg Iron/L), Iron-fortified Infant Formula (2.3 Mg Iron/L)
Conditions: Infant; Dietary Supplements; Food, Fortified
Intervention: Ferrous Sulfate, Iron-fortified Infant Formula (12.4 Mg Iron/L), Iron-fortified Infant Formula (2.3 Mg Iron/L)
June 13, 2012
16
NCT03325270
Completed
Completed
Effect of Prebiotics on Iron Absorption in Women With Low Iron Stores
Conditions: Iron-deficiency
Intervention: Labeled Ferrous Fumarate, Labeled Ferrous Fumarate + Prebiotics, Labeled Ferrous Sulfate + Prebiotics
Conditions: Iron-deficiency
Intervention: Labeled Ferrous Fumarate, Labeled Ferrous Fumarate + Prebiotics, Labeled Ferrous Sulfate + Prebiotics
January 15, 2019
17
NCT03762148
Completed
Completed
Determination of a Dose-dependent Effect of GOS on Iron Absorption, and Addition of Vitamin C
Conditions: Iron-deficiency
Conditions: Iron-deficiency
July 24, 2019
18
NCT02747316
Active, not recruiting
Active, not recruiting
Iron Absorption and Transfer to the Fetus During Pregnancy in Normal Weight and Overweight/Obese Women and the Effects on Infants Iron Status
Conditions: Overweight; Obesity; Pregnancy
Conditions: Overweight; Obesity; Pregnancy
October 3, 2019
19
NCT03642223
Completed
Completed
Central and Peripheral Adiposity and Iron Absorption
Conditions: Adiposity; Iron-deficiency
Intervention: Stable Iron Isotopes
Conditions: Adiposity; Iron-deficiency
Intervention: Stable Iron Isotopes
March 27, 2019
20
NCT04079322
Recruiting
Recruiting
September 4, 2019
21
NCT01985386
Completed
Completed
Iron Absorption From GDS Capsules II
Conditions: Iron Deficiency
Intervention: GDS Capsule With Meal, Ferrous Sulfate With Meal
Conditions: Iron Deficiency
Intervention: GDS Capsule With Meal, Ferrous Sulfate With Meal
July 29, 2014
22
NCT02197624
Completed
Completed
Genetic Variants and Iron Absorption
Conditions: Iron Absorption
Conditions: Iron Absorption
July 21, 2014
23
NCT00474500
Completed
Completed
Effect of Coca-Cola on Iron Absorption
Conditions: Iron Deficiency
Intervention: Coca, Cola, Diet Coke
Conditions: Iron Deficiency
Intervention: Coca, Cola, Diet Coke
March 16, 2011
24
NCT02096250
Completed
Completed
Iron Absorption in Haiti
Conditions: Iron Deficiency
Intervention: NaFeEDTA, Ferrous Fumarate, NaFeEDTA + Ferrous Fumarate
Conditions: Iron Deficiency
Intervention: NaFeEDTA, Ferrous Fumarate, NaFeEDTA + Ferrous Fumarate
September 22, 2015
25
NCT01991600
Completed
Completed
A Pilot Study to Assess the Influence of Dietary Organic Acids on Iron Absorption.
Conditions: Iron Deficiency Anaemia
Conditions: Iron Deficiency Anaemia
November 18, 2013
26
NCT01884506
Completed
Completed
Evaluation of the Effect of Body Weight and Composition on Iron Absorption and Blood Volume
Conditions: Obesity
Intervention: Labeled Iron Solution, Labeled Iron Solution And Ascorbic Acid
Conditions: Obesity
Intervention: Labeled Iron Solution, Labeled Iron Solution And Ascorbic Acid
October 11, 2013
27
NCT00754234
Completed
Completed
Iron Bioavailability From MyPyramid Menus
Conditions: Nonheme Iron Absorption
Intervention: My Pyramid Menu Days 1, 2, 3, 4, 5, 6 Or 7
Conditions: Nonheme Iron Absorption
Intervention: My Pyramid Menu Days 1, 2, 3, 4, 5, 6 Or 7
May 24, 2018
28
NCT01874496
Completed
Completed
Iron Absorption From GDS Capsules
Conditions: Iron Deficiency
Intervention: GDS, No Meal, GDS, Meal, Control, No Meal, Control, Meal
Conditions: Iron Deficiency
Intervention: GDS, No Meal, GDS, Meal, Control, No Meal, Control, Meal
September 12, 2013
29
NCT02714075
Completed
Completed
Comparison of Iron Absorption From Extruded FePP-fortified Rice Containing Zinc, Citric Acid/Trisodium Citrate and EDTA
Conditions: Iron Deficiency and/or Anemia
Intervention: Ferric Pyrophosphate And Zinc Oxide, Ferric Pyrophosphate And Zinc Sulphate, Ferric Pyrophosphate, ZnO, Citric Acid And Trisodium Citrate, Ferric Pyrophosphate, ZnSO4, CA/TSC, Ferric Pyrophosphate, ZnO, CA, EDTA, Ferrous Sulphate
Conditions: Iron Deficiency and/or Anemia
Intervention: Ferric Pyrophosphate And Zinc Oxide, Ferric Pyrophosphate And Zinc Sulphate, Ferric Pyrophosphate, ZnO, Citric Acid And Trisodium Citrate, Ferric Pyrophosphate, ZnSO4, CA/TSC, Ferric Pyrophosphate, ZnO, CA, EDTA, Ferrous Sulphate
December 6, 2016
30
NCT03996421
Not yet recruiting
Not yet recruiting
Determination of Iron Absorption Mechanism From Ferrous Fumarate With GOS
Conditions: Low Iron Stores
Intervention: Nutritional Iron (14 Mg) Supplement In Form Of Ferrous Fumarate, Ferrous Fumarate + 15 G GOS
Conditions: Low Iron Stores
Intervention: Nutritional Iron (14 Mg) Supplement In Form Of Ferrous Fumarate, Ferrous Fumarate + 15 G GOS
June 21, 2019
31
NCT02437955
Completed
Completed
Fe Absorption in Mother and Child Pairs From Wheat Fortified With Iron With and Without Phenolic Containing Beverages
Conditions: Anemia; Deficiency, Nutritional, With Poor Iron Absorption
Intervention: Ferrous Sulfate Fortified Bread With Tea, Ferrous Sulfate Fortified Bread With Water, Ferrous Fumarate Fortified Bread With Tea, Ferrous Fumarate Fortified Bread With Water
Conditions: Anemia; Deficiency, Nutritional, With Poor Iron Absorption
Intervention: Ferrous Sulfate Fortified Bread With Tea, Ferrous Sulfate Fortified Bread With Water, Ferrous Fumarate Fortified Bread With Tea, Ferrous Fumarate Fortified Bread With Water
November 27, 2015
32
NCT03156725
Completed
Completed
Assessment of Iron Absorption From Aspergillus Oryzae
Conditions: Iron Bioavailability
Conditions: Iron Bioavailability
May 15, 2017
33
NCT01521273
Completed
Completed
Iron Absorption From Biofortified Beans With Different Levels of Phytic Acid
Conditions: Enrichment of Blood
Conditions: Enrichment of Blood
November 7, 2012
34
NCT01687062
Completed
Completed
Iron Absorption From Tef-injera in Women of Reproductive Age
Conditions: Iron Deficiency
Intervention: FeSO4, Reduction Of Phytate, NaFeEDTA
Conditions: Iron Deficiency
Intervention: FeSO4, Reduction Of Phytate, NaFeEDTA
October 11, 2013
35
NCT01108939
Completed
Completed
Study of Iron Absorption and Utilization in Asymptomatic Malaria
Conditions: Malaria, Falciparum
Intervention: Antimalarial Treatment, Observation
Conditions: Malaria, Falciparum
Intervention: Antimalarial Treatment, Observation
June 6, 2013
36
NCT02131870
Completed
Completed
Study of the Iron Absorption From Capsules Containing Lactobacilli and Iron
Conditions: Healthy
Intervention: L Plantarum DSM 9843 Or Placebo
Conditions: Healthy
Intervention: L Plantarum DSM 9843 Or Placebo
August 13, 2014
37
NCT02176772
Completed
Completed
Iron Absorption and Utilization During Tuberculosis and After Treatment
Conditions: Tuberculosis
Intervention: Stable Iron Isotopes, Non-drug Intervention
Conditions: Tuberculosis
Intervention: Stable Iron Isotopes, Non-drug Intervention
June 2, 2017
38
NCT02666417
Completed
Completed
Iron Absorption From a Micronutrient Powder Containing Galacto-oligosaccharides (GOS)
Conditions: Anemia, Iron-Deficiency
Intervention: Fortified Maize Porridge (MNP+iron), Fortified Maize Porridge (MNP+iron+GOS)
Conditions: Anemia, Iron-Deficiency
Intervention: Fortified Maize Porridge (MNP+iron), Fortified Maize Porridge (MNP+iron+GOS)
July 17, 2018
39
NCT01423162
Completed
Completed
Iron Bioavailability of Fortified Oat Drink
Conditions: Iron Absorption
Intervention: Dietary Intervention (with Vit C Then Without Vit C), Dietary Intervention (without Vit C Followed By With Vit C)
Conditions: Iron Absorption
Intervention: Dietary Intervention (with Vit C Then Without Vit C), Dietary Intervention (without Vit C Followed By With Vit C)
August 22, 2012
40
NCT02989311
Completed
Completed
Effect of Timing of Micronutrient Powder Consumption on Iron Absorption in Infants
Conditions: Anemia; Iron Deficiency
Intervention: Fortified Maize Porridge (MNP And Iron), Fortified Maize Porridge (MNP + Iron + GOS)
Conditions: Anemia; Iron Deficiency
Intervention: Fortified Maize Porridge (MNP And Iron), Fortified Maize Porridge (MNP + Iron + GOS)
October 3, 2017
41
NCT03990181
Not yet recruiting
Not yet recruiting
Inhibiting Dietary Iron Absorption in Subjects With Hereditary Hemochromatosis by a Natural Polyphenol Supplement
Conditions: Iron Metabolism Disorders; Iron Overload; Polyphenols
Intervention: Meal Matrix & NPPS, Meal Matrix & CS, No-matrix & NPPS, No-matrix & CS
Conditions: Iron Metabolism Disorders; Iron Overload; Polyphenols
Intervention: Meal Matrix & NPPS, Meal Matrix & CS, No-matrix & NPPS, No-matrix & CS
July 15, 2019
42
NCT02050932
Completed
Completed
The Optimization of Iron Bioavailability of Supplements Using Hepcidin Levels in Humans
Conditions: Iron Deficiency
Conditions: Iron Deficiency
January 30, 2014
43
NCT03317873
Completed
Completed
The Effect of Genetic Variation in TMPRSS6 Gene (SNP rs855791) on Oral Iron Absorption: an Iron Stable Isotope Study
Conditions: Iron Metabolism Disorders
Intervention: Testmeal A, Testmeal B
Conditions: Iron Metabolism Disorders
Intervention: Testmeal A, Testmeal B
June 11, 2019
44
NCT03703726
Active, not recruiting
Active, not recruiting
Iron Absorption From Fortified Extruded Rice Using Different Extruding Temperatures.
Conditions: Iron-deficiency
Intervention: Reference Meal, Test Meal A, Test Meal B, Test Meal C, Test Meal D, Test Meal E, Test Meal F
Conditions: Iron-deficiency
Intervention: Reference Meal, Test Meal A, Test Meal B, Test Meal C, Test Meal D, Test Meal E, Test Meal F
October 11, 2018
45
NCT01991626
Completed
Completed
Evaluation of the Effects of an Exogenous Phytase on Iron Absorption From LNS Added to Complementary Foods
Conditions: Iron Deficiency
Intervention: Micronutrient Powder, Micronutrient Powder (containing FeSO4), Phytase, Iron Pyrophosphate (FePP), Iron Sulphate
Conditions: Iron Deficiency
Intervention: Micronutrient Powder, Micronutrient Powder (containing FeSO4), Phytase, Iron Pyrophosphate (FePP), Iron Sulphate
September 22, 2015
46
NCT03703739
Active, not recruiting
Active, not recruiting
Iron Absorption From Iron Fortified Extruded Rice Co-fortified With Various Solubilizing Agents
Conditions: Iron-deficiency
Conditions: Iron-deficiency
October 11, 2018
47
NCT02370940
Completed
Completed
Regular Consumption of High Phytate Reduces Inhibitory Effect of Phytate on Iron Absorption
Conditions: Iron Bioavailability
Conditions: Iron Bioavailability
February 19, 2015
48
NCT01634932
Completed
Completed
Iron Absorption From Regular, Biofortified and Post-harvest Fortified Pearl Millet
Conditions: Iron Deficiency; Biofortification
Intervention: Regular Iron, Iron Biofortified Millet, Post-harvest Iron-fortifed Millet
Conditions: Iron Deficiency; Biofortification
Intervention: Regular Iron, Iron Biofortified Millet, Post-harvest Iron-fortifed Millet
November 7, 2012
49
NCT03623997
Completed
Completed
Measuring Erythrocyte Iron Incorporation From Different Dosing Regimens in Anemic Women
Conditions: Iron Deficiency Anemia
Intervention: Iron Stable Isotope Labeled Iron(II) Sulfate
Conditions: Iron Deficiency Anemia
Intervention: Iron Stable Isotope Labeled Iron(II) Sulfate
August 20, 2018
50
NCT01472484
Completed
Completed
Impact of Bean Polyphenols and Phytic Acid on Iron Absorption
Conditions: Blood Iron Isotope Enrichment
Conditions: Blood Iron Isotope Enrichment
June 18, 2012
Last Updated
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Clinical trial records are often updated after they have been published. The first received, last updated, start, and end dates are all displayed in the full text view of the clinical trial.
Specify a From date to find the most recent trials. Specify both From and To dates to find trials submitted during a certain period. If no dates are given, all trials will be included.
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These phases are defined by the Food and Drug Administration in the Code of Federal Regulations.
In Phase 1 (Phase I) clinical trials, researchers test a new drug or treatment in a small group of people (20-80) for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
In Phase 2 (Phase II) clinical trials, the study drug or treatment is given to a larger group of people (100-300) to see if it is effective and to further evaluate its safety.
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ia0006
actg 076
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Examples:
National Cancer Institute
Mayo Clinic
Bristol-Myers Squibb
It is common for several organizations to collaborate by providing funding, facilities, experimental treatments, etc. Which organization is considered the sponsor is decided by the data provider.
A search in this area will check only the sponsor field. To also look for collaborators, use the Sponsor/Collaborators search box.
When the Exact Match checkbox is checked, the sponsor name in the study must exactly match the sponsor name in the search. For example, if unchecked, a search for Merck in the lead sponsor field will find Merck, Merck KGaA, Dupont Merck, and Merck Sharp & Dohme. When checked, only Merck, with no other words in the name, will be found.
Examples:
National Cancer Institute
Mayo Clinic
Bristol-Myers Squibb
Sponsor/Collaborators
Use this box to specify institutes, organizations, or companies that are
conducting or otherwise supporting a trial.
It is common for several organizations to collaborate by providing funding, facilities, experimental treatments, etc. Which organization is considered the sponsor is decided by the data provider.
Searching this area will look in both the sponsor field and in the collaborators field. To only look in the sponsor field, use the Sponsor (Lead) search box.
When the Exact Match checkbox is checked, the name in the study must exactly match the name in the search. For example, if unchecked, a search for Merck will find Merck, Merck KGaA, Dupont Merck, and Merck Sharp & Dohme. When checked, only Merck, with no other words in the name, will be found.
Examples:
National Cancer Institute
Mayo Clinic
Bristol-Myers Squibb
It is common for several organizations to collaborate by providing funding, facilities, experimental treatments, etc. Which organization is considered the sponsor is decided by the data provider.
Searching this area will look in both the sponsor field and in the collaborators field. To only look in the sponsor field, use the Sponsor (Lead) search box.
When the Exact Match checkbox is checked, the name in the study must exactly match the name in the search. For example, if unchecked, a search for Merck will find Merck, Merck KGaA, Dupont Merck, and Merck Sharp & Dohme. When checked, only Merck, with no other words in the name, will be found.
Examples:
National Cancer Institute
Mayo Clinic
Bristol-Myers Squibb
Outcome Measures
Use this box to specify an outcome measure used to evaluate trial results.
Examples:
weight loss
heart failure
suicide
Outcome measures are used to evaluate trial results. For example, an obesity treatment
might be evaluated by a measure of weight loss after 6 months. Measures can also be used
to quantify side effects, such as number of myocardial infarctions,
number of patients with heart arrhythmia, number of suicides, etc.
Use this box to specify an outcome measure used to evaluate trial results.
Examples:
weight loss
heart failure
suicide
Interventions
Use this box to specify drugs, devices, procedures, or vaccines used in a trial.
Examples:
clofibrate
cyclosporine
vitamin e
Interventions refer to the drug, vaccine, procedure, device, or other potential treatment being studied.
Interventions can also include less intrusive possibilities such as surveys, education, and interviews.
Use this box to specify drugs, devices, procedures, or vaccines used in a trial.
Examples:
clofibrate
cyclosporine
vitamin e
Conditions
Use this box to specify the conditions being studied.
Examples:
lupus
heart attack
leukemia
risk factors for breast cancer
Conditions usually refer to a disease, disorder, syndrome, illness, or injury. In ClinicalTrials.gov,
conditions include any health issue worth studying, such as lifespan, quality of life, health risks, etc.
Use this box to specify the conditions being studied.
Examples:
lupus
heart attack
leukemia
risk factors for breast cancer
Study Type
There are three types of studies available in ClinicalTrials.gov:
There are three types of studies available in ClinicalTrials.gov:
Interventional:
Observational:
Expanded Access:
Studies where individuals are assigned to receive specific interventions.
Participants may receive diagnostic, therapeutic or other types of interventions.
Assignment of the intervention may or may not be random.
Individuals are tracked and biomedical and/or health outcomes are assessed.
Observational:
Studies without an intervention.
Studies where biomedical and/or health outcomes are assessed in a pre-defined group of individuals.
Participants may receive diagnostic, therapeutic, or other interventions, but the investigator
does not assign specific interventions to the participants of the study.
Expanded Access:
Records describing the procedure for obtaining an experimental drug or device for patients who
are failing on currently available treatments for their condition and also are unable to
participate in ongoing clinical trials. Expanded Access records are used to register all
types of non-protocol access to experimental treatments, including protocol exception,
single-patient IND, treatment IND, compassionate use, emergency use, continued access and parallel track.
Study Results
Searches can be restricted to studies with or without results.
The inclusion of study results is a relatively new feature of ClinicalTrials.gov. Collection of results began in September of 2008. Almost all older studies and some newer studies do not include results. As time goes on, there will be more results available.
The inclusion of study results is a relatively new feature of ClinicalTrials.gov. Collection of results began in September of 2008. Almost all older studies and some newer studies do not include results. As time goes on, there will be more results available.
Recruitment Status
Also known as Enrollment Status.
Not all clinical trials in this database are accepting new participants. If you are looking for studies that are currently recruiting participants, will be recruiting in the future, or are about drugs that are available for expanded access, select Open Studies in the recruitment menu.
If you are interested in all trials, whether they are recruiting new participants or not, leave the menu with All Studies selected.
Trials may not be recruiting because they are full, completed, or halted for various reasons. In addition, some trials have very restrictive eligibility requirements and must seek participants by invitation only. To see these studies, Select Closed Studies in the recruitment menu.
Full list of all possible recruitment status values:
Open recruitment status values:
Closed recruitment status values:
Values are color coded (as shown) in the search results.
Not all clinical trials in this database are accepting new participants. If you are looking for studies that are currently recruiting participants, will be recruiting in the future, or are about drugs that are available for expanded access, select Open Studies in the recruitment menu.
If you are interested in all trials, whether they are recruiting new participants or not, leave the menu with All Studies selected.
Trials may not be recruiting because they are full, completed, or halted for various reasons. In addition, some trials have very restrictive eligibility requirements and must seek participants by invitation only. To see these studies, Select Closed Studies in the recruitment menu.
Full list of all possible recruitment status values:
Open recruitment status values:
Recruiting,
Not yet recruiting, or
Available for expanded access.
Not yet recruiting, or
Available for expanded access.
Closed recruitment status values:
Active, not recruiting,
Completed,
Terminated,
Suspended,
Withdrawn,
Enrolling by invitation,
Temporarily not available for expanded access,
No longer available for expanded access,
Approved for marketing, or
Unknown.
Completed,
Terminated,
Suspended,
Withdrawn,
Enrolling by invitation,
Temporarily not available for expanded access,
No longer available for expanded access,
Approved for marketing, or
Unknown.
Search Terms
Use this box to specify general search terms found anywhere in the trial record.
Multiple terms can be separated by an AND (all uppercase).
Examples:
type ii diabetes
veterans affairs medical center
heart attacks in older adults
nhlbi AND heart disease
Cisplatin AND safety study
Multiple terms can be separated by an AND (all uppercase).
Examples:
type ii diabetes
veterans affairs medical center
heart attacks in older adults
nhlbi AND heart disease
Cisplatin AND safety study
Help for Searching clinical trials
Help Topics:
Basic Search:
On the Basic Search page, enter a word or word(s) that you want to use to find studies.
These may include diseases, interventions, and/or locations.
Medical terms are often several words long, such as Percutaneous Coronary Intervention. To only find studies where the words are together as a phrase, put the term in quotes (e.g., "Percutaneous Coronary Intervention"). If you search for a multi-word term without quotes, studies with all words together as a phrase will appear higher in the results list than studies where the words are separated and spread throughout the document. For example, a search for Heart Attack will list a study about,
A search for "Heart Attack" would not find the second study. Synonyms are known for some terms and are used where possible. For example, a search for Heart Attack will also find occurrences of Myocardial Infarction.
Medical terms are often several words long, such as Percutaneous Coronary Intervention. To only find studies where the words are together as a phrase, put the term in quotes (e.g., "Percutaneous Coronary Intervention"). If you search for a multi-word term without quotes, studies with all words together as a phrase will appear higher in the results list than studies where the words are separated and spread throughout the document. For example, a search for Heart Attack will list a study about,
Use of a Pacemaker Following a Heart Attack.
higher than the study,
Heart Defects and Transient Ischemic Attacks
A search for "Heart Attack" would not find the second study. Synonyms are known for some terms and are used where possible. For example, a search for Heart Attack will also find occurrences of Myocardial Infarction.
Advanced Search:
Many searches are a single term and can be performed with a few words in the
search box. But, sometimes you need more control. Click on the Advanced Search tab
(if starting a new search) or Refine Search tab (if modifying an existing search)
to show additional search fields.
The additional search fields can be used to limit your search results. Note that it is not necessary to fill in all the fields, only those that are needed for your search. If you are finding too few studies, consider clearing a field and searching again.
Search Terms:
Recruitment:
Interventions:
Outcomes Measures:
Sponsor/Collaborators:
Sponsor (Lead):
Study IDs:
Country/State:
Location Terms:
Gender:
Age Group:
Phase:
Funded By:
Safety Issue:
First Received:
Last Updated:
The additional search fields can be used to limit your search results. Note that it is not necessary to fill in all the fields, only those that are needed for your search. If you are finding too few studies, consider clearing a field and searching again.
Search Terms:
Performs a general search in all sections of the study record, including title,
description, conditions, interventions, locations, etc. Terms in this field are
searched the same as Basic Search.
Recruitment:
Limits search results to studies that are open or closed. New volunteers may be
able to participate in open studies, but not closed studies.
Open recruitment status values:
Closed recruitment status values:
Values are color coded (as shown) in the search results.
Study Results:Open recruitment status values:
Recruiting,
Not yet recruiting, or
Available for expanded access.
Not yet recruiting, or
Available for expanded access.
Closed recruitment status values:
Active, not recruiting,
Completed,
Terminated,
Suspended,
Withdrawn,
Enrolling by invitation,
Temporarily not available for expanded access,
No longer available for expanded access,
Approved for marketing, or
Unknown.
Completed,
Terminated,
Suspended,
Withdrawn,
Enrolling by invitation,
Temporarily not available for expanded access,
No longer available for expanded access,
Approved for marketing, or
Unknown.
Values are color coded (as shown) in the search results.
Limits search results based on whether the study has results or not:
Study Type:
All Studies,
Studies With Results, or
Studies Without Results
The inclusion of Study Results is a new feature of ClinicalTrials.gov.
Only a few studies have results available.Studies With Results, or
Studies Without Results
Limits search results to any of the following study types:
Conditions:
Interventional,
Observational, or
Expanded Access
Observational, or
Expanded Access
Performs a search on fields describing the diseases or conditions being studied.
Interventions:
Performs a search on fields listing the drugs or interventions being studied.
Outcomes Measures:
Performs a search on fields listing the outcome measures used to quantify study results.
Sponsor/Collaborators:
Performs a search on fields listing the sponsor and collaborators of a study.
When the Exact Match checkbox is checked, the sponsor/collaborator name in the study must exactly match the name in the search. For example, if unchecked, a search for Merck in the sponsor/collaborator field will find Merck, Merck KGaA, Dupont Merck, and Merck Sharp & Dohme. When checked, only Merck, with no other words in the name, will be found.
When the Exact Match checkbox is checked, the sponsor/collaborator name in the study must exactly match the name in the search. For example, if unchecked, a search for Merck in the sponsor/collaborator field will find Merck, Merck KGaA, Dupont Merck, and Merck Sharp & Dohme. When checked, only Merck, with no other words in the name, will be found.
Sponsor (Lead):
Performs a search on the sponsor field of a study.
It is common for several organizations to collaborate by providing funding, facilities, experimental treatments, etc. Which organization is considered the "sponsor" is decided by the data provider.
When the Exact Match checkbox is checked, the lead sponsor name in the study must exactly match the lead sponsor name in the search. For example, if unchecked, a search for Merck in the lead sponsor field will find Merck, Merck KGaA, Dupont Merck, and Merck Sharp & Dohme. When checked, only Merck, with no other words in the name, will be found.
It is common for several organizations to collaborate by providing funding, facilities, experimental treatments, etc. Which organization is considered the "sponsor" is decided by the data provider.
When the Exact Match checkbox is checked, the lead sponsor name in the study must exactly match the lead sponsor name in the search. For example, if unchecked, a search for Merck in the lead sponsor field will find Merck, Merck KGaA, Dupont Merck, and Merck Sharp & Dohme. When checked, only Merck, with no other words in the name, will be found.
Study IDs:
Performs a search on fields listing ID numbers.
Country/State:
Trials are often conducted at many locations around the world.
Select up to three locations to find trials conducted in
specific countries. Some countries (currently limited to the
United States, Canada, and Australia), locations can be narrowed
further by selecting a state (e.g., United States, Alabama).
Location Terms:
Finds studies in specific locations such as a city (Los Angeles) or facility (Mayo Clinic).
Not all studies include this level of detail, but if they do, this will find them.
Gender:
Limits search results to those studies that accept female or male participants.
Age Group:
Limits search results to those studies that include at least one of the specified age
ranges. More than one age group can be selected.
Phase:
Limits search results to studies that are labeled with at least one of the specified
phases. More than one Phase can be selected.
Funded By:
Limits search results to studies that have at least one sponsor of the specified types.
More than one sponsor type can be selected.
Safety Issue:
Limits search results to studies that have at least one outcome measure designated as a safety issue.
First Received:
Limits search results to studies that were received by clinical trials within a
specified date range. The "From" or "To" field can be left blank.
Last Updated:
Limits search results to studies that were modified within a
specified date range. The "From" or "To" field can be left blank.
Refine Search:
Searches display a list of studies found (List Results tab). If you are not content with
the search results, click on the Refine Search tab at the top of the list to modify your
search.
Add terms to empty fields to search within your current result. You can also add terms to fields that contain terms. For best results, use an AND (all upper case) as a separator between terms in the same field.
For example:
When you are done making changes, click Search to display the new results.
Add terms to empty fields to search within your current result. You can also add terms to fields that contain terms. For best results, use an AND (all upper case) as a separator between terms in the same field.
For example:
heart attack
heart attack AND aspirin
heart attack AND aspirin AND older adults
heart attack AND aspirin AND older adults AND California
heart attack AND aspirin
heart attack AND aspirin AND older adults
heart attack AND aspirin AND older adults AND California
When you are done making changes, click Search to display the new results.
Search Expressions:
Use AND (all upper case) to find study records that contain all terms connected by AND.
For example:
Use OR (all upper case) to find study records that contain either term connected by OR.
For example:
Use NOT (all upper case) to find study records that do not contain the term following NOT.
For example:
Likewise, AND, OR, NOT, and parentheses can be used to create more complicated search expressions.
For example:
Note that the use of AND and OR as logical operators can be confusing.
An appropriate search for a list such as,
To search for AND as a word, instead of using it as an operator, put it in quotes.
Likewise, you can quote OR, NOT, and parentheses.
For example:
prostate cancer AND radiation
heart disease AND stroke AND California
heart disease AND stroke AND California
Use OR (all upper case) to find study records that contain either term connected by OR.
For example:
Aspirin OR ibuprofen
heart disease OR heart attack
heart disease OR heart attack
Use NOT (all upper case) to find study records that do not contain the term following NOT.
For example:
Immunodeficiency NOT AIDS
Likewise, AND, OR, NOT, and parentheses can be used to create more complicated search expressions.
For example:
prostate cancer AND NOT ( radiation OR homeopathic remedies )
( heart disease OR heart attack ) AND ( stroke OR clot )
( heart disease OR heart attack ) AND ( stroke OR clot )
Note that the use of AND and OR as logical operators can be confusing.
An appropriate search for a list such as,
Ear, Nose, and Throat Conditions
is the expression
( Ear OR Nose OR Throat ) AND Conditions
Fortunately, search will do a pretty good job of finding the right studies either way.To search for AND as a word, instead of using it as an operator, put it in quotes.
Likewise, you can quote OR, NOT, and parentheses.