Test directory: Lupus Anticoagulant DRVVT w/Interp

Ordering Code6674
Test NameLupus Anticoagulant DRVVT w/Interp
AliasLupus Anticoagulant w/reflex to Confirmation
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)

ComponentAgeMale NormMale Critical LowMale Critical HighFemale NormFemale Critical HighFemale Critical LowUnitsAdd'l info
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.