Evaluating the AQT90 FLEX D-dimer Test for diagnosing Venous Thromboembolism

AQT90 FLEX D-dimer Clinical Sensitivity and Specificity

Observational Radiometer Medical ApS · NCT06749223

This study is testing the AQT90 FLEX D-dimer Test to see if it can help diagnose Venous Thromboembolism in patients who might have a low or moderate chance of having the condition.

Quick facts

Study typeObservational
Enrollment600 (estimated)
Ages18 Years and up
SexAll
SponsorRadiometer Medical ApS Industry-sponsored
Locations1 site (Viborg)
Trial IDNCT06749223 on ClinicalTrials.gov

What this trial studies

This study aims to assess the clinical performance of the AQT90 FLEX D-dimer Test in diagnosing Venous Thromboembolism (VTE) in patients with low or moderate pretest probability. It will measure various performance metrics including sensitivity, specificity, and predictive values of the test. The study will involve patients presenting with symptoms of VTE and will exclude those with certain medical conditions or recent treatments that could affect results.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 and older who show signs of VTE with low or moderate pretest probability.

Not a fit: Patients who are pregnant, have received recent anticoagulant therapy, or have certain medical conditions like malignancy will not benefit from this study.

Why it matters

Potential benefit: If successful, this study could improve the accuracy of VTE diagnoses, leading to better patient outcomes.

How similar studies have performed: Other studies have shown promising results with similar D-dimer testing approaches, indicating potential for success.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Subject is 18 years of age and older
* Subject, who presents with signs and symptoms of VTE and had low or moderate pre-test probability of DVT or PE assessed by Well's score
* Subject must be able to understand information given, and be willing and able to voluntarily give their consent to participate in this study

Exclusion Criteria:

* Subject, who is pregnant
* Subject, who has received fibrinolytic therapy within the previous seven days
* Subject, who has received treatment with anticoagulants (unfractionated heparin, LMWH, VKA (vitamin K-antagonists), DOACs (direct oral anticoagulants) within the previous seven days
* Subject, who has had trauma or surgery within the previous four weeks
* Subject with malignancy
* Subject with disseminated intravascular coagulation (DIC)
* Subject, who has an invalid written informed consent or has withdrawn consent

Where this trial is running

Viborg

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions VTED-dimer
Last reviewed 2026-06-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.