Apr 7, 2015




Clinical Hub,Tools & Resources,UWHC Lab Test Directory,Blood Center of SE WI

Von Willebrand Factor Multimers

Von Willebrand Factor Multimers (HCVWFMUL) Blood Center of SE WI Lab Test

Name: Von Willebrand Factor Multimers

Test Name: Von Willebrand Factor Multimers

Health Link Test Code: HCVWFMUL


Methodology: Gel Electrophoresis

Testing Site: Testing will be sent to an approved reference laboratory

In-Lab Turnaround Time: 1 - 2 weeks.

Specimen: Blood

Collection Container: Light blue top (3.2% NaCitrate)

Collection Instructions:

Do NOT draw through a line containing heparin. The venipuncture MUST be atraumatic to avoid hemolysis and contamination with tissue factors and platelets. Tube must be allowed to fill completely.

Collection Volume: Full 3.5 mL tube

Pediatric Collection Volume: Pediatric tube filled to fill mark

Stability Ambient:

4 hours on spun tube

Stability Refridgerated:

4 hours

Stability Frozen:

30 days

Sample Analyzed: Plasma

Testing Volume: 0.5 mL

Pediatric Testing Volume: 0.4 mL

Specimen Processing:

Centrifuge specimen to yield platelet poor plasma (platelet count should be less than 10 K/uL). Separate plasma and transfer to plastic tube or vial. Freeze plasma within 4 hours of collection at -20°C or below.

Specimen Transport:

Transport whole blood specimen at room temperature to laboratory within 4 hours of collection. See Specimen Processing for instructions if transport criteria are not met. Transport frozen plasma aliquot on dry ice to UWHC Hospital Laboratory.


Report provides interpretation.