Epic Code LAB2111186 von Willebrand Factor Multimer
Additional Codes
Versiti Wisconsin test code 1063
Test Name Alias
vonWillebrand Multimer Analysis VWF Quantitative Multimer | 8283
Interface Order Alias
10283
Specimen Requirements
Specimen Type: Platelet Poor Plasma
Container/Tube: Blue top (3.2% Sodium Citrate)
Volume: 2.7 mL Whole Blood (Tube must be full) or 1.8 mL Whole Blood (Tube must be full)
Prefered Volume: 0.5mL plasma
Minimum volume: 0.4 mL plasma
Collection Instructions: Centrifuge and remove plasma within 1 hour of collection. Freeze aliquot in plastic transport tubes immediately
Special Instructions
To obtain a coagulation plasma sample, centrifuge the capped specimen tube at a speed and time required to consistently produce platelet-poor plasma (platelet count < 10,000/uL). The centrifugal speed and duration to accomplish this must be established in the individual laboratory. Our laboratories use centrifuges at 3,000 to 4,000 rpm for ten minutes or higher speed and shorter duration centrifuges. When removing plasma to send for coagulation testing, it is important NOT to go all the way down to the cells. Leave a minimum 1/4 inch of plasma sitting on cells. This layer contains the platelets which were separated from the plasma during spinning. The platelets interfere with coagulation testing so we leave this layer undisturbed
Rejection Criteria
Hemolysis
Specimen Stability
Ambient: 1 hour
Frozen: 2 months
Test Frequency
Sent to reference laboratory. Usual TAT 7-10 days.
Performing Department
REFERRAL SEND OUTS
Performing Department Laboratory Location
Send Out to Versiti Wisconsin Ref. Lab
CPT
85247
CDM Code
80101911
Epic Test ID
1230101297
LOINC
vWFMultimer Analysis: 32217-2
vWFMultimer Analysis Interp: 8251-1
Beaker LOINC
Send Out test to Versiti Wisconsin, LOINC Unavailable
Reviewed Date
6/9/2023
Beaker Names
Beaker Procedure Name: VON WILLEBRAND FACTOR MULTIMER
Beaker Display Name: von Willebrand Factor Multimer
BEAKER TEST NAME: VON WILLEBRAND FACTOR MULTIMER
BEAKER TEST REPORT NAME: Von Willebrand Factor Multimer
Beaker Synonyms
No synonym on file
Beaker Collection and Specimen Handling
BEAKER COLLECTION: LOOK+LOOK
Beaker Location, Container and Temperature
VERSITI WISCONSIN FROZEN: BLUE TOP TUBE (Preferred)