A Performance Evaluation of the LumiraDx Point of Care CRP Assay (REACT)

June 9, 2026 updated by: LumiraDx UK Limited

A Performance Evaluation of the LumiraDx Point of Care CRP Assay.

In patients with symptoms of infection, tissue injury and inflammatory disorders the study will evaluate agreement between the CRP measurements from the LumiraDx POC CRP assay and the Siemens Dimension Xpand Plus CRP assay, as an aid in evaluation and detection of infection, tissue injury and inflammatory disorders.

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.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

This is a performance evaluation study designed to assess the precision and accuracy of the LumiraDx point of Care (POC) C-reactive Protein (CRP) test when used in patients presenting with symptoms of infection, tissue injury or inflammatory disorder.

The LumiraDx POC CRP test is a quantitative immunoassay providing results in under 10 minutes. The accuracy of the LumiraDx POC CRP test will be assessed using capillary whole blood, venous blood, and plasma samples, by comparison to the CRP results obtained from the same individuals as analysed by trained laboratory professionals using the reference device, Siemens Dimension Xpand Plus CRP assay. The results of this study are intended to be used for regulatory filings for use as an in vitro diagnostic test in the UK, European Union (EU) and other relevant geographies.

Adults (aged 18 and over at time of consent) presenting to the study sites with symptoms of infection, tissue injury or inflammatory disorder will be included in the study. Approximately 250 patients will be recruited to ensure that sufficient suitable patients are enrolled and to allow for a small level of exclusions.

After obtaining informed consent, blood tube samples will be drawn and fingerstick samples of capillary blood will be taken from the subject, these will be applied directly onto unique test strips for immediate measurement of CRP on the LumiraDx POC instrument.

The CRP results obtained via the LumiraDx CRP test will be used in a set of comparative analyses designed to determine the performance characteristics of the test. This study is an observational, cross-sectional design. As an observational study of an investigative device, results obtained during the course of the study will not inform or alter patient management or treatment decisions in any way.

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 (Actual)

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.
79

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

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 Kingdom
      • Edinburgh, United Kingdom
        • Royal Infirmary Edinburgh
      • London, United Kingdom
        • University College London Hospital
      • London, United Kingdom
        • St Georges 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

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Adult patients (≥18 years) presenting to participating UK clinical sites with symptoms suggestive of infection, tissue injury, or inflammatory disorders. Eligible patients were recruited from emergency departments, acute medical units, inpatient wards, and outpatient clinics, including NPT settings.

Description

Inclusion Criteria:

  • Patients 18 years and over at the time of consent
  • Willing and able to provide written informed consent and comply with study procedures
  • Presenting with symptoms of infection, tissue injury, inflammatory disorders. This includes but not limited to : respiratory tract infection (upper and lower), rheumatoid arthritis, Lupus, burns, trauma, inflammatory bowel disease.

Exclusion Criteria:

  • The patient is currently receiving or has received within the past thirty (30) days of the study visit an experimental biologic or drug including either treatment or therapy.
  • Skin lesions or conditions that would preclude a fingerstick and/or a venous blood draw.
  • Patient has previously participated in this study
  • Any patient with critical illness or requiring a time critical intervention
  • Patient with end of life or palliative care
  • Patient suffering from the following conditions: Myeloma, monoclonal gammopathy, extreme lipaemia
  • Patient is deemed medically unfit to participate.

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.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Symptoms of inflammation, Infection, tissue injury
Venous blood draw of up to 24mL and up to 6 capillary fingersticks
Diagnostic test: Venepuncture
Venous blood draw
Diagnostic test: Fingerstick
Capillary blood draw

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
To determine the performance of the LumiraDx POC CRP assay when compared to the Siemens Dimension Xpand Plus CRP in patients with symptoms of infection, inflammation, or injury.
Time Frame: 2 months
Measurement of blood samples from patients with symptoms of inflammation, infection or injury in a reference method and in the LumiraDx method to assess accuracy of the LumiraDx method
2 months

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.
LumiraDx UK Limited

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: Alasdair Gray, MD, NHS Lothian
  • Principal Investigator: James Harnett, University College London Hospital NHS Foundation Trust
  • Principal Investigator: Phil Moss, St Georges University Hospitals NHS Foundation Trust

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 (Actual)

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.
November 25, 2021

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.
January 11, 2022

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.
May 30, 2023

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).
December 17, 2021

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.
December 17, 2021

First Posted (Actual)

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.
January 6, 2022

Study Record Updates

Last Update Posted (Actual)

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.
June 11, 2026

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.
June 9, 2026

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.
June 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

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.
  • S-CLIN-PROT-00008

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

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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