Von Willebrand Comprehensive Panel

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General Information

Lab Name
Von Willebrand Comprehensive Panel
Lab Code
VWDP1
Epic Name
Von Willebrand Comprehensive Panel
Description

Comprehensive panel for the workup of suspected von Willebrand Disease. Results will be reviewed and interpretation will be provided by a pathologist.

Synonyms
VON WILLEBRAND DISEASE PANEL, VON WILLEBRAND DISEASE SCREEN, VWDP, VWDPKG
Components
Code Name
F8 Factor VIII Activity
VWFACT VWF Activity
VWFAG Von Willebrand Factor Ag
VWFCBA VW Collagen Binding
VWFCB VWF Collagen Binding
VWCBM VWF Collagen Binding Method
VWMULT VWF Multimer Analysis
MULTI VWF Multimer Analysis
MULTIM VWF Multimer Method

Interpretation

Method

See individual tests

Reference Range
See individual components

Ordering & Collection

Specimen Type
Blood
Collection

2 each of either a 3 mL or 5 mL BLUE TOP (CITRATE) tube

Handling Instructions

The Laboratory MUST process specimen within 4 hours of collection.

For Outside Laboratories: Centrifuge BLUE top for 10 minutes, remove plasma and re-spin plasma for another 10 minutes. Decant & Freeze TWO aliquots of plasma (minimum 1.0 mL each) at -20°C to -80°C. Send frozen on dry ice.

Quantity
Requested: Entire sample
Minimum: 1.0 mL plasma

Processing

Receiving Instructions

UW-MT: Take specimen to UW-MT Coag Lab for processing. Coag tech will freeze plasma sample for transport to HMC Coag.

HMC: Take specimen to HMC Coag Lab for processing.

Outside Laboratories: Centrifuge BLUE top for 10 minutes, remove plasma and re-spin plasma for another 10 minutes. Decant & Freeze TWO aliquots of plasma (minimum 1.0 mL each) at -20°C to -80°C. Send frozen on dry ice.

Misc Sendout

Performance

Lab Department
Frequency
Factor VIII, VWFACT, VWFAG, and VWFCBA run on Tuesday and Friday and result by end of day. Multimers run on Wednesday and result on end of Thursday.
Available STAT?
No
Performing Location(s)
HMC Coagulation
206-520-4600

325 9th Ave, Rm # GWH-47, Seattle, WA 98104-2420

Billing & Coding

CPT Codes
83520, 85240, 85245, 85246, 85247
LOINC
18720-3
Interfaced Order Code
UOW4192