Dilute Russell Viper Venom Time (dRVVT) DRVAS
| Method(s) | Clot Detection |
|---|---|
| Specimen Required | |
| Collect | One adequately filled 3.0 mL light blue (sodium citrate) top tube. For specimens that cannot be shipped to the laboratory to arrive within 4 hours of collection, see Collection and Processing of Coagulation Specimens information (link below). |
| Transport | **TIME SENSITIVE** For specimens that cannot be shipped to the laboratory to arrive within 4 hours of collection, see Collection and Processing of Coagulation Specimens information (link below). |
| Remarks | Draw blood into citrate (light blue) tube filled to the proper level (1 part anticoagulant to 9 parts blood). Invert tube 3-4 times to avoid clotting. |
| Stability | Ambient, Refrigerated: 4 hours; Frozen: 2 weeks. |
| Unacceptable Conditions | Specimens that are clotted, hemolyzed, collected in the wrong tube, less than 90% or greater than 110% filled, exceed the stability limit, or non-frozen plasma are unacceptable for testing. |
| Schedule | Tue, Thu |
| Billing Code | 4010093 |
| CPTCode | 85613; if reflexed, add 85613 dRVVT 1:1 |
| Notes | Heparinized samples are not acceptable for testing. Tranport the tube to the laboratory ASAP so that platelet-poor plasma can be prepared and frozen. Platelet-poor plasma must be frozen within 4 hours of collection. |
| Preferred Specimen Collection Device(s) | |
| Reference Interval | |
|
Less than 44.1 seconds |
|
