The dilute Russell Viper Venom time integrated test is a sensitive method for determining the presence of a Lupus Anticoagulant and/or presence of a phospholipid antibody. A positive test, when confirmed, makes the diagnosis of Lupus anticoagulant which may be associated with arterial or venous thrombosis. Note: the presence of direct oral anticoagulants may interfere with testing.
Platelet Poor Plasma: Centrifuge light blue-top tube 15 minutes at
approx. 1500 g within 60 minutes of collection. Using a plastic
pipette, remove plasma, taking care to avoid the WBC/platelet buffy
layer and place into a plastic vial.
Centrifuge a second time and transfer platelet-poor plasma into
a new plastic vial. Plasma must be free of platelets (<10,000/mcL).
Freeze immediately and ship on dry ice.
Reported (Analytical Time)
The CPT codes provided are based on AMA guidelines and are for informational purposes only.
CPT coding is the sole responsibility of the billing party.
Please direct any questions regarding coding to the payer being billed.
Transport Temperature: Frozen Specimen Requirements: 2 mL (1.0 mL minimum) frozen platelet-poor plasma collected in a sodium citrate (light blue-top) tube Specimen Stability: Room temperature and Refrigerated; Unacceptable If the dRVVT Screen is prolonged (>45 seconds), the dRVVT Confirmation will be performed at an additional charge (CPT: 85597). If the dRVVT Confirm is positive, a dRVVT 1:1 dilution will be performed at an additional charge (CPT: 85613). Rejection Criteria: Hemolysis Methodology: Clot Detection