Lupus Anticoagulant by dRVVT Test
Short Name: Lupus Anticoagulant dRVVT Test
Also known as: dRVVT Test, Dilute Russell Viper Venom Time Test
Lupus Anticoagulant by dRVVT Test test available at DNA Labs India for ₹1,989. Uses Electromechanical Clot Detection on Whole blood samples. Results in Sample collection daily by 3 pm; report available next day.. Free home collection in 300+ cities across India.
🩺 Medically Reviewed By
Dr Gottipati Vemkateswarlu
Consultant Hematologist · Reg: AMC4946
Last reviewed: September 7, 2026
Overview
To diagnose lupus anticoagulant by evaluating the clotting time of blood using dilute Russell viper venom, aiding in the identification of thromboembolic disorders.
- Test Code
- 1193
- Price
- ₹1,989
- Sample Type
- Whole blood
- Result Time
- Sample collection daily by 3 pm; report available next day.
- Fasting Required
- Yes (8 hours)
- Method
- Electromechanical Clot Detection
Sample Collection
Overnight fasting is preferred. Discontinue heparin for 1 day and oral anticoagulants for 7 days prior to sampling, with prior consent from your treating physician. Duly filled Coagulation Requisition Form (Form 15) is mandatory.
Method: Venipuncture
Laboratory Analysis
A blood sample will be drawn via venipuncture into a blue top (sodium citrate) tube and mixed thoroughly by inversion.
Report Delivery
The sample should be transported to the lab within 4 hours. If delayed, prepare platelet-poor plasma (PPP) by double centrifugation and freeze immediately.
Timeline: Sample collection daily by 3 pm; report available next day.
Patient Instructions
About This Test
Who Should Get This Test
To diagnose lupus anticoagulant by evaluating the clotting time of blood using dilute Russell viper venom, aiding in the identification of thromboembolic disorders.
How to Prepare
- Collect 3 mL of whole blood in a blue top (sodium citrate) tube.
- Mix thoroughly by inversion to prevent clotting.
- Transport to lab within 4 hours. If not possible, prepare PPP: centrifuge at 3600 rpm for 15 minutes, transfer supernatant, centrifuge again, and freeze.
- Ship frozen; do not thaw.
Doctor's Notes
Reviewed by Dr Gottipati Vemkateswarlu — MBBS, MD (Haematology) · Reg. No. AMC4946
"The dRVVT test is a critical diagnostic tool for lupus anticoagulant, which can lead to serious thromboembolic events. Timely diagnosis and management are essential."
Last medically reviewed: September 7, 2026
Test Parameters & Specifications
Sample Stability
- Hemolyzed or clotted samples
- Incorrect tube type or insufficient volume
- Samples not processed or stored as instructed
- Missing Coagulation Requisition Form (Form 15)
Understanding Your Results
If you experience symptoms such as unexplained swelling, pain, shortness of breath, or recurrent clots, or if your dRVVT test results are abnormal, consult a hematologist or physician for further evaluation.
Limitations
- ⚠False positives may occur in some inflammatory conditions
- ⚠Results require clinical correlation for diagnosis
- ⚠Not standalone for LA diagnosis; often used with other tests
Risks & Considerations
- ●Minor bruising or discomfort at the blood draw site
- ●Rare risk of infection or dizziness
Interfering Factors
- ●Use of heparin within 1 day of testing
- ●Use of oral anticoagulants (e.g., warfarin) within 7 days of testing
- ●Lipemic, hemolyzed, or clotted blood samples
Compare With Similar Tests
| Test | Lupus Anticoagulant by dRVVT Test | Activated Partial Thromboplastin Time (aPTT) | Prothrombin Time (PT) | Thrombin Time (TT) |
|---|---|---|---|---|
| Comparison | Lupus Anticoagulant by dRVVT Test |
Frequently Asked Questions
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