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Test Code DRVI2 Dilute Russell Viper Venom Time (DRVVT) Mix Ratio, Plasma


Specimen Required


Only orderable as part of a reflex. For more information see DRVI1 / Dilute Russell Viper Venom Time (DRVVT), with Reflex, Plasma.


Useful For

Detecting the presence 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 activated partial thromboplastin time (APTT) or prothrombin time clotting tests

 

Distinguishing LA from a specific coagulation factor inhibitor or coagulation factor deficiencies

Method Name

Only orderable as part of a reflex. For more information see DRVI1 / Dilute Russell Viper Venom Time (DRVVT), with Reflex, Plasma.

Reporting Name

DRVVT Mix Ratio

Specimen Type

Plasma Na Cit

Specimen Minimum Volume

Only orderable as part of a reflex. For more information see DRVI1 / Dilute Russell Viper Venom Time (DRVVT), with Reflex, Plasma.

Specimen Stability Information

Specimen Type Temperature Time Special Container
Plasma Na Cit Frozen 14 days

Reference Values

Only orderable as part of a reflex. For more information see DRVI1 / Dilute Russell Viper Venom Time (DRVVT), with Reflex, Plasma.

 

<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.

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test has been cleared or approved by the U.S. Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information

85613

LOINC Code Information

Test ID Test Order Name Order LOINC Value
DRVI2 DRVVT Mix Ratio 75512-4

 

Result ID Test Result Name Result LOINC Value
RMRI2 DRVVT Mix Ratio 75512-4