Dilute RVVT Screen Ratio with Reflex

Centralized Core Laboratory:Chemistry

Test ID/Workstation: DRVTI MAYO

Specimen Type: plasma

Tube Type: Sodium citrate (Blue) tube

Collection Volume: 2.7 mL (minimum 1.8 mL)
(1.0 mL plasma sent to Reference Lab, frozen)

Storage: Frozen

Availability: Sent to Reference Laboratory

Methodology: Clot-based Assay

Special Instructions: Testing while the patient is on anticoagulant therapy, including warfarin, dabigatran, or a direct Xa inhibitor may cause a false positive result.

Lab/Phone: 330-543-8418

TAT: 1-4 days

Additional Info: Reference value: ratio <1.2

CPT Code: 85613 (x2)

Panel Includes: DRVVT Screen
DRVVT Mix and Confirm will be performed if the DRVVT screen is > or = 1.2

Synonyms: Lupus Anticoagulant,

Dilute Russell Viper Venom Time

Requisition Form
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