Test directory: Lupus Anticoagulant DRVVT w/Interp

Ordering Code6674
Test NameLupus Anticoagulant DRVVT w/Interp
AliasLupus Anticoagulant w/reflex to Confirmation
LA
DRVV
DRVVT
LA Screen
Test includes review and interpretation by Pathologist
Preferred SpecimenPlasma
Preferred ContainerCitrate, 3.2% (Lt. Blue)
Optimum Volume2 mL divided into 2 aliquots
Collection InstructionsDraw full tube
Draw 2 tubes (optimum).
Handling InstructionsDouble spin before freezing.
Transport RequirementsOahu: Frozen
Airline: Frozen
Specimen StabilityAmbient: 4 Hours
Frozen: 2 Weeks
Rejection CriteriaClotted, Hemolyzed, Over filled tube, Thawed,
Under filled tube
Avail. StatNO
Analytic TimeUp to 5 Days
MethodologyDilute Russell's viper venom

Reference range(s)

The reference ranges listed below are valid on this date of November 21, 2024.
ComponentAgeMale NormMale Critical LowMale Critical HighFemale NormFemale Critical HighFemale Critical LowUnitsAdd'l info
ProtimeALL11.8-14.211.8-14.2secs
Part. Throm. Time (PTT)ALL23.5-37.823.5-37.8secs
Thrombin TimeALL15-2215-22secs
DRVV ScreenALLsecsSee report.
DRVVS RatioALL<=1.20<=1.20
DRVV ConfirmALLsecsSee report.
DRVVC RatioALLSee report.
Normalized RatioALL<1.20<1.20
DRVVT MixALLsecsSee report.