Adduct Dipstick for Diagnosis of Acetaminophen Toxicity

January 3, 2017 updated by: Arkansas Children's Hospital Research Institute
This study is a non-intervention, clinical study to test "research use only" APAP protein adducts dipsticks in human blood samples. The study will be conducted in two phases. In phase 1, the research use only dipsticks and dipstick testing components will be tested for feasibility in the emergency department at UAMS. Patients will be enrolled that are having an acetaminophen level obtained as part of their medical evaluation. In phase 2, the research use only dipsticks will be tested in centers that participate in the Acute Liver Failure Study Group (ALFSG), a clinical research network funded by the National Institutes of Diabetes, Digestive and Kidney Diseases (NIDDK). Subjects participating in the clinical registry of the ALFSG will be approached for enrollment. These patients all have the diagnosis of acute liver failure or acute liver injury from a variety of etiologies, including APAP. A single blood sample will be obtained and will be aliquoted for 1) testing by the dipstick and 2) testing by high performance liquid chromatography with electrochemical detection (HPLC-EC) analysis for APAP protein adducts. APAP levels will also be determined from the second aliquot of blood. In both Phase 1 and Phase 2, the dipsticks will be read manually and by dipstick readers by independent testers that are not directly involved in the clinical care of the patients. The results of the two dipstick readings will be recorded, will remain confidential and will not be used in the diagnosis or management of the patient. The results of the dipsticks and HPLC-EC assays will be compared to the final patient diagnoses.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Anticipated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
120

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Arkansas
      • Little Rock, Arkansas, United States, 72202
        • University of Arkansas for Medical Sciences/Arkansas Children's Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

12 years and older (ADULT, OLDER_ADULT, CHILD)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Part 1 - Arkansas Children's Hospital ER

Part 2 - adults presenting to hepatology centers participating in the Acute Liver Failure Study Group (ALFSG).

Description

Part 1

Inclusion Criteria:

  • Subject is 12-18 years of age.
  • Subject has an APAP level ordered as part of clinical management.

Exclusion Criteria:

  • Previous recent history of APAP overdose in the previous 30 days.

Part 2

Inclusion Criteria:

  • Subject is 18 years of age or older.
  • Subject is enrolled in the ALFSG registry.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Part I

Part 1 will be a feasibility study conducted in the Emergency Department at UAMS and ACH. This Part will test the research use dipsticks and dipstick testing kit in subjects that are having APAP levels obtained as part of their medical evaluation.

Part 1 20 subjects

Part I

Inclusion Criteria:

Subject is 12-18 years of age. Subject has an APAP level ordered as part of clinical management.

Exclusion Criteria:

Previous recent history of APAP overdose in the previous 30 days.
Part 2

Part 2

Part 2 will be a non-intervention study in adults presenting to hepatology centers participating in the Acute Liver Failure Study Group (ALFSG). The dipstick will be tested in these subjects and the results will be compared to the HPLC-EC measurement of APAP protein adducts. The results of the dipstick testing will not be used for diagnosis or clinical decision-making.

Part 2 100 subjects

Part 2

Inclusion Criteria:

Subject is 18 years of age or older. Subject is enrolled in the ALFSG registry.

Exclusion Criteria:

None.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Accuracy of dipstick compared to HPLC-EC Method for detecting assays
Time Frame: Each subject will have one sample taken but chart review could last entire hospitalization expected average of 2 weeks
The primary purpose of this study is to pilot test the study procedures including the dipstick, dipstick instructions, micro-centrifuges, and dipstick readers in a clinical setting and then in the second phase the primary objective will be to compare the results from the dipstick to the currently used method HPLC-EC
Each subject will have one sample taken but chart review could last entire hospitalization expected average of 2 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Arkansas Children's Hospital Research Institute

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Medical University of South Carolina
University of Michigan
University of Washington
University of California, San Francisco
University of Texas Southwestern Medical Center
Virginia Commonwealth University
University of Arkansas

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Henry Farrar, MD, University of Arkansas

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
August 1, 2011

Primary Completion (ACTUAL)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 1, 2015

Study Completion (ACTUAL)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
September 1, 2016

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 23, 2011

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 10, 2012

First Posted (ESTIMATE)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
April 12, 2012

Study Record Updates

Last Update Posted (ESTIMATE)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
January 4, 2017

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
January 3, 2017

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
January 1, 2017

More Information

Terms related to this study

Keywords

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • Acetaminophen Adduct Dipstick

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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