Does 23 and ME Test for Factor V Leiden?
James Olson
Updated on May 24, 2026
Accordingly, does 23andMe test for Factor V Leiden?
About a quarter of those with VTEs have one of the two variants tested by 23andMe. These two variants are the Factor V Leiden variant in the F5 gene and the Prothrombin G20210A variant in the F2 gene.
One may also ask, what is the blood test for Factor V Leiden? Factor V Leiden (FVL) mutation and prothrombin 20210 (PT 20210) mutation tests are two tests often used together to help diagnose the cause of inappropriate blood clot (thrombus) formation, including deep vein thrombosis (DVT) and/or venous thromboembolism (VTE).
Hereof, how is Factor V Leiden diagnosed?
The presence of Factor V Leiden is easily diagnosed with a laboratory test. This test looks at an individual's DNA to see if they are making normal Factor V or the abnormal Factor V Leiden. It also identifies if a patient has one or two copies of the Factor V Leiden gene.
Does Medicare Cover Factor V Leiden testing?
There is no Medicare benefit for assessment of thrombosis risk in asymptomatic patients (aka screening for inherited thrombophilia) or in asymptomatic individuals whose relatives have documented inherited thrombophilia.