What does a positive Russell viper venom test mean?

If your test results are positive, your healthcare provider is likely to order other special blood-clotting tests. They might include: Activated partial thromboplastin time. Anticardiolipin antibody. Modified Russell viper venom time, or MRVVT.

What is a DRVVT blood test?

It is recommended that two tests be used to detect lupus anticoagulant initially (known as LA-Screen). The most sensitive tests are dilute Russell viper venom test (DRVVT) and a LA-sensitive PTT (PTT-LA), one that uses reagents containing low levels of phospholipid.

What does a high DRVVT screen mean?

The DRVVT may be abnormally prolonged (DRVVT Screen Ratio > or =1.20) by LA as well as coagulation factor deficiencies, anticoagulant effects, or other types of coagulation factor inhibitors. Specimens with abnormal results (DRVVT screen ratio > or =1.20) are subjected to reflexive testing.

What does it mean if I test positive for lupus anticoagulant?

Your health care provider will diagnose antiphospholipid antibody syndrome (APS) if you have positive test for aPL or the lupus anticoagulant, and one or more of the following events: A blood clot. Repeated miscarriages.

What is normal range for Drvvt screen?

Provides information to assist in interpretation of the test results. Dilute Russell viper venom time (DRVVT) screen ratio (<1.20): A normal DRVVT screen ratio (<1.20) indicates that lupus anticoagulant (LA) is not present or not detectable by this method (but might be detected with other methods).

What is normal range for DRVVT screen?

Does positive lupus anticoagulant mean you have lupus?

Although a positive test is called “lupus anticoagulant,” the name comes from its confused history. It does not mean the patient has lupus, nor does it mean that the blood is prevented from clotting. In fact, in the body as opposed to the test tube, it clots too easily.