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Mayo Clinic Laboratories

Test Code FVIII Factor VIII Assay, Plasma

Performing Laboratory

ChristianaCare-Newark Campus

Methodology

Clot-Based Assay

Specimen Requirements

Container/Tube:  2.7-mL light blue-top (sodium citrate) tube
Specimen:  Full tube - must be filled to exactly 2.7 mL
Collection Instructions:

Note:  Label tube with patient’s full name and 1 additional unique patient identifier such as date of birth, medical record number, emergency ID number, date and time of draw, collector’s initials, and type of specimen.

Reference Values

>6 months:  50-150%

<6 months:  contact the Coagulation Laboratory at 302-733-3708

Day(s) Test Set Up

Monday through Friday

Routine Turnaround Time:  6 hours

STAT Turnaround Time:  2 hours