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HelpTest ID BLOD0670 Dilute Russell Viper Venom Time
AKA
DRVVT
Specimen Type/Requirements
Blue top (Sodium Citrate) tube - Plasma, Double Spun Platelet Poor
See Coagulation Testing and Platelet Poor Plasma Preparation
The 3.2% Sodium Citrate tube must be filled to appropriate volume to acquire the 9:1 blood to anticoagulant ratio that is critical for valid results.
Do not store in a frost-free freezer. Do not test specimens that have gone through freeze/thaw cycles.
Test is not affected by hemolysis or lipemia.
Specimen Volume
| Preferred Volume | 2.0 mL |
|---|---|
| Minimum Volume | 1.0 mL |
Stability/Transport
| Room Temperature | 4 hours | |
|---|---|---|
| Refrigerated | Not Acceptable | |
| Frozen | 14 days | Preferred for transport |
Performed Test Frequency
Tuesday and Friday
Additional Information
Abnormal results can be obtained in patients on anticoagulant therapy, including the newer agents (e.g. rivaroxaban, apixaban, etc.). This can result in false interpretation of lupus inhibitor.
Methodology
Stagos Instrument
Performing Lab
Sanford Laboratories Sioux Falls
CPT
85613