Test Directory

Dilute Russell Viper Venom Time (DRVVT), with Reflex, Plasma

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Updated Test Information:

Test Description
Dilute Russell Viper Venom Time (DRVVT), with Reflex, Plasma
Synonym(s)
DRVVT Screen Ratio, w/Reflex
Test ID
DRVI1
General Information
Useful for:
Detecting and confirming or helping to exclude the presence of lupus anticoagulants (LA)
Identifying LA that do not prolong the activated partial thromboplastin time (APTT)
Evaluating unexplained prolongation of the APTT or prothrombin time clotting tests
Distinguishing LA from a specific coagulation factor inhibitor or coagulation factor deficiencies
Specimen Type
Plasma
Specimen Requirements
Light Blue
Stability
Frozen 14 days
Unacceptable Specimen Conditions
Gross hemolysis Reject
Gross lipemia Reject
Gross icterus Reject
Methodology
Optical Clot-Based
Estimated TAT
1-4 days
Testing Schedule
Monday-Friday
CPT Code(s)
85613
Minimum Sample Volume
0.5 mL
Reference Range
Dilute Russell viper venom time screen ratio <1.20
Normal ranges for children: Not clearly established, but similar to normal ranges for adults, except for newborn
infants whose results may not reach adult values until 3 to 6 months of age.
Reflex Conditions
DRVI2 DRVVT Mix Ratio
DRVI3 DRVVT Confirmation Ratio
Performing Lab
Mayo
LOINC Code(s)
15359-3