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, hemplyzed, collected in the wrong tube, less than 90% filled, exceed the stability limit, or non-frozen plasma are unacceptable for testing.

Schedule Mon, 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

No Appointment Necessary
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12 Patient Service Centers in Central New York.

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