Medical Necessity Documentation:
Client Notes:
Patient Preparation:
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 |
Critical Ranges:
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
Documentation:
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:
LAB2686
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
Included Tests:
CPT Coding:
85613 (85597, 85613)