Test Details
Mnemonic
DRVVT
Ordering Code
2500770
CPT-4 Code(s)
85613, plus 85613 for 1:1 MIX and/or 85613 for DRVVT Confirm, if reflexed, at additional cost
Specimen Information
Patient Preparation
Patient should not be on Warfarin (Coumadin®) for 2 weeks or heparin therapy for 2 days before collection. Please note if patient is on either therapy as these therapies can affect certain coagulation factors or assays, preclude their performance, or cause spurious results
Collect
Light blue 3.2 % sodium citrate
Specimen Preparation
Send 3.0 mL plasma frozen in a screw capped plastic vial. CRITICAL FROZEN. See appendices for coagulation test instructions.
Minimum Volume
2.0 mL
Transport Temperature
Critical frozen
Rejection Criteria
Hemolyzed specimen, thawed specimen, serum
Stability
Room temperature: 8 hours
Refrigerated: Unacceptable
Frozen: 30 days
Refrigerated: Unacceptable
Frozen: 30 days
Methodology
Clotting
Reference Range
Negative
Performing Laboratory
Warde Medical Laboratory
New York DOH Approval Status
Yes