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22566 Dilute Russell Viper Venom Time

Dilute Russell Viper Venom Time
Test Code: DRVVT
Synonyms/Keywords
​DRVVT
Specimen Requirements
Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
*Platelet Poor Plasma 3.2% Citrated Blue Top Tube (BTT)​ ​ 0.75 mL ​ 0.75 mL ​ 0.5 mL​
Collection Processing Instructions

​One 0.75 mL citrated Blue Top Tube (BTT) plasma aliquot.
If more than one coagulation test is ordered, a separate aliquot is needed for each test.
-Collect in Citrated Blue Top Tube (BTT)
-Citrate anticoagulant must be adjusted for HCT >55%
-Tube must be at least 90% full
-Invert completely 3-4 times (without shaking) to mix
*See Instructions for: Preparation of Platelet Poor Plasma

Specimen Stability Information
Specimen Type Temperature Time
​ ​ ​Plasma​Room Temp​4 hours
​Refrigerated​4 hours
​Frozen ​6 months
Rejection Criteria
Clotted or Hemolyzed
​Contamination with IV or Hickman Line fluids
​Specimens that thaw during storage or transport
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
​Marshfield ​Monday, Wednesday, Friday Less than 2 hours​ Optical Clot Detection/ACL TOP 550
Test Information
To increase the sensitivity and specificity of the laboratory diagnosis of lupus anticoagulants (LA), both SCT and DRVVT should be ordered.  These two tests have been combined as "Lupus Anticoagulant Panel (LAPAN)" for ordering convenience.
 
Lupus anticoagulant testing (DRVVT and SCT) should not be performed on patients receiving rivaroxaban, apixaban, dabigatran, or warfarin.  For patients on these medications, one may consider anticardiolipin antibody and/or anti-beta-2 glycoprotein 1 antibody testing.
 
Reference Range Information
Reference Range
DRVVT ratio:  <=1.2 Negative LA
 
DRVVT ratio:  >1.2 Positive for LA
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
​85613 ​ ​ ​Optical Clot Detection ​
Synonyms/Keywords
​DRVVT
Ordering Applications
Ordering Application Description
​Centricity

​a. Dil-Russells Viper Venom Time 

b. Russells Viper Menom Dil

​Cerner ​Dilute Russell Viper Venom Time
​COM ​DRVVT-Dil-Russells Viper Venom
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
*Platelet Poor Plasma 3.2% Citrated Blue Top Tube (BTT)​ ​ 0.75 mL ​ 0.75 mL ​ 0.5 mL​
Collection Processing

​One 0.75 mL citrated Blue Top Tube (BTT) plasma aliquot.
If more than one coagulation test is ordered, a separate aliquot is needed for each test.
-Collect in Citrated Blue Top Tube (BTT)
-Citrate anticoagulant must be adjusted for HCT >55%
-Tube must be at least 90% full
-Invert completely 3-4 times (without shaking) to mix
*See Instructions for: Preparation of Platelet Poor Plasma

Specimen Stability Information
Specimen Type Temperature Time
​ ​ ​Plasma​Room Temp​4 hours
​Refrigerated​4 hours
​Frozen ​6 months
Rejection Criteria
Clotted or Hemolyzed
​Contamination with IV or Hickman Line fluids
​Specimens that thaw during storage or transport
Reference Range Information
Reference Range
DRVVT ratio:  <=1.2 Negative LA
 
DRVVT ratio:  >1.2 Positive for LA
For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
​Marshfield ​Monday, Wednesday, Friday Less than 2 hours​ Optical Clot Detection/ACL TOP 550
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
​85613 ​ ​ ​Optical Clot Detection ​
For most current information refer to the Marshfield Laboratory online reference manual.