Days Set Up
Monday and Thursday
Analytic Time

1 hour

MiChart Code
DRVVT
Soft Order Code
DRVVT

Test Updated:

Synonyms

Dilute Venom Time
DRVVT
Russell's Viper Venom Test
Venom Time
DRVVT PT
DRVVT CONT
DRVVT RAT
DRVVT PATIENT SECONDS
DRVVT CONTROL SECONDS
DRVVT RATIO
DILUTE RUSSELL'S VIPER VENOM
DRVVT PT
DRVVT RAT
LA CONFIRM
DRVVT PATIENT SECONDS
DRVVT RATIO
Phospholipid Antibody (Lupus Anticoagulant)

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All specimens should be accompanied by a requisition.

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Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

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Test Overview

Test Methodology

Optical determination of clotting time after addition of snake venom reagent (DRVVT). If result is elevated, a second reagent is added that contains higher concentration of phospholipid (DRVRA).

Test Usage

Detection of phospholipid antibody (lupus anticoagulant) in plasma.

Reference Range

DRVVT <44 seconds; DRVVT Ratio <1.25
[list][markcolor=red]*Reference ranges may change over time. Please refer to the original patient report when evaluating results.[/list]

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Onsite

Collect specimen in a blue top (citrate 3.2%) tube. Mix by inversion. Specimen should arrive at lab within 3 hours of collection; transport at room temperature. Collection of the blood through lines that have been previously flushed with heparin should be avoided. If the blood must be drawn through a VAD (vascular access device), the line should be flushed with 5 mL of saline and the first 5 mL of blood or six dead space volumes of the VAD discarded.

Collection Offsite

Collect specimen in a blue top (citrate 3.2%) tube. Mix by inversion. Specimen should arrive at lab within 3 hours of collection; transport at room temperature. Alternatively, centrifuge, aliquot plasma into a plastic vial, and freeze the specimen within 4 hours of collection. Transport frozen specimen on dry ice. Collection of the blood through lines that have been previously flushed with heparin should be avoided. If the blood must be drawn through a VAD (vascular access device), the line should be flushed with 5 mL of saline and the first 5 mL of blood or six dead space volumes of the VAD discarded.

Blue Top Tube
Normal Volume
Full 2.7mL tube or 1mL plasma aliquot
Minimum Volume
Full 1.8mL tube or 1mL plasma aliquot

Billing Information

CPT Code
85613
Pro Fee Code
 
LOINC
 

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.