DRVVT Screen with Reflex Confirmation

Last Modified: 5/21/2019 9:22:19 AM


Specimen Requirements: 2 - 1.0 mL Frozen Plasma from each of 2 Blue Top Tubes - 3.2% Na Citrate in a 2 Plastic Vials
Collection Instructions: Centrifuge light blue-top tube 15 minutes at approximately 1500 g within 60 minutes of collection. Using a plastic pipette, remove plasma, taking care to avoid the WBC/platelet buffy layer and place into a plastic vial. Centrifuge a second time and transfer platelet-poor plasma into a new plastic vial. Plasma must be free of platelets (<10,000/mcL).

Note: the presence of direct oral anticoagulants may interfere with testing.
Minimum Volume: 1.0 mL platelet poor plasma
Transport & Storage: Temperature/Stability: 90 days Frozen

Freeze immediately and ship on dry ice.
Reference Range:
dRVVT Screen ≤45 seconds
  dRVVT Confirm Negative
  dRVVT 1:1 Mix Corrected
Test Comments: If the dRVVT Screen is prolonged (> 45 seconds), the dRVVT Confirmation will be performed at an additional charge (CPT: 85598). If the dRVVT Confirm is positive, a dRVVT 1:1 dilution will be performed at an additional charge (CPT: 85613)
Methodology: Clot Detection
Clinical Significance: Diagnosis of a lupus anticoagulant (LA) requires testing with a least 2 screening reagents, followed by confirmatory testing. The dRVVT screen, confirm, and mix satisfy international guidelines for LA evaluations
Custom Panel: No

PRODUCTION SCHEDULE

Turn Around Time: 3 to 6 days
Days Performed: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday
Sites Performed: Quest - Chantilly
PHL Test Code: DRVT
EPIC Test Code:
Send Out Test Code: 15780
Alternate Test Names: Dilute Russell Viper Venom; DRVVT Screen w/Reflex; dRVVT Screen w/rfl dRVVT Confirm & dRVVT 1:1 Mix
CPT Coding: 85613 (85597, 85613)

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