Children's Mercy Kansas City
Name
von Willebrands Factor Antigen (VWAg)

CMH Lab Section
Hematology

Specimen Requirements
2.7 ml in a blue top tube

Availability
STAT or Routine

Turn Around Time
Routine: batch testing completed on Mondays and Thursdays
Specimens must be received in lab by 9AM to be included the day's batch STAT: 2-3 hours
STAT is not available 1PM-7AM

Special Instructions
Send Specimen to Hematology ASAP

Methodology
STAR Latex Immune assay

Ranges
0 Days= 40-287
1 Day= 40- 254
3 Days= 40- 246
1 month= 40- 206
3 months= 40- 197
6 months= 52-175

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