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Epic Code LAB2111186 von Willebrand Factor Multimer

Important Note

There is currently a nationwide shortage of this tube. Please take steps to ensure specimen integrity to reduce recollection. Specimen Tube Shortage (link)

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

1/24/2020

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)