HomeAnswersHematologylupus circulating anticoagulant (LCA)

DRVVT test shows 52.2 seconds. Do I need further testing for clotting?

This Premium Q&A, reviewed and published, features a real conversation between an iCliniq user and a physician.

Patient's Query

Hello doctor,

I was recently diagnosed with a blood clot in my left jugular vein and put on Eliquis (10 mg twice daily for a week, now 5 mg twice daily). I was also recently diagnosed with some sort of autoimmune disorder, but it is not clear yet which one. After being diagnosed with a blood clot, my rheumatologist performed a lupus anticoagulant panel to see if I am taking the correct blood thinners. Everything came back normal except the dRVVT, which was prolonged by 52.2 seconds. The dRVVT mix was 45 seconds, and I was told that it is negative.

I have read a lot about dRVVT testing online now, and I am concerned that I am still LA positive because the mix can show false negatives. I have also read that converting the results into a ratio is preferred. Also, my aPTT was slightly elevated (37 seconds). I have no risk factors for blood clots (normal weight, no hormonal birth control).

  1. What is your opinion?
  2. Do I need further testing?
  3. How likely is it that I should be taking different blood thinners?

Please help.

Thank you.

Answered by Dr. Goswami Parth Rajendragiri

Education:

MBBS

Professional Bio:

Dr. Goswami Parth Rajendragiri is an experienced General Physician and Pathologist with extensive years of clinical expertise. He specializes in diagnosing and managing a wide range of medical conditions while providing holistic care to patients. As a Pathologist, he is skilled in performing and interpreting laboratory investigations that aid in accurate diagnosis and treatment planning. Dr. Rajendragiri is dedicated to delivering patient-focused care with a strong emphasis on preventive medicine and overall well-being.

This doctor is not available for online consultations on the platform anymore.

Hi,

Welcome to icliniq.com.

If you have antiphospholipid antibody syndrome (APS), then your anti-cardiolipin antibody or lupus anticoagulant should be positive. Additionally, in APS, the raised RVT (renal vein thrombosis) is not corrected by adding normal plasma. So, the chance of lupus or APS seems to be less in your case. I suggest you investigate with a full coagulation profile workup, including coagulation factor assay and factor V estimation as well.

You have been given Apixaban, which is a very good drug for patients with thrombosis (blood clot formation). Kindly continue its intake as suggested by your doctor.

Follow your hematologist's advice and discuss all these.

I hope I have answered your question.

Let me know if I can assist you further.

Thank you.

Medically reviewed by Dr. Vinodhini J.
Published At March 27, 2020
Reviewed At June 25, 2026

Education:

MBBS

Professional Bio:

Dr. Goswami Parth Rajendragiri is an experienced General Physician and Pathologist with extensive years of clinical expertise. He specializes in diagnosing and managing a wide range of medical conditions while providing holistic care to patients. As a Pathologist, he is skilled in performing and interpreting laboratory investigations that aid in accurate diagnosis and treatment planning. Dr. Rajendragiri is dedicated to delivering patient-focused care with a strong emphasis on preventive medicine and overall well-being.

This doctor is not available for online consultations on the platform anymore.

Education:

BDS

Professional Bio:

Dr. Vinodhini J. is a Dental Surgeon with extensive years of clinical experience. She specializes in the diagnosis, prevention, and treatment of dental and oral health issues, including restorative, surgical, and cosmetic procedures. With a patient-centered approach, she focuses on maintaining oral health, alleviating discomfort, and enhancing smiles. Her expertise ensures comprehensive care tailored to each patient’s dental needs and overall wellbeing.

This doctor is not available for online consultations on the platform anymore.

Same symptoms don't mean you have the same problem. Consult a doctor now!

Education:

MBBS

Professional Bio:

Dr. Goswami Parth Rajendragiri is an experienced General Physician and Pathologist with extensive years of clinical expertise. He specializes in diagnosing and managing a wide range of medical conditions while providing holistic care to patients. As a Pathologist, he is skilled in performing and interpreting laboratory investigations that aid in accurate diagnosis and treatment planning. Dr. Rajendragiri is dedicated to delivering patient-focused care with a strong emphasis on preventive medicine and overall well-being.

This doctor is not available for online consultations on the platform anymore.

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