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Available Tests

  • Factor VIII Assay

Factor VIII Assay

Light Blue Top Tube

Tube Type

Test ID   LAB306
EPIC Order
CPT Code(s)   85240
Group/Individual Test   Individual
Laboratory   Core Laboratory
Tube Station   30 Routine: 888 STAT
Specimen Routine: 2.7 mL Blood/Light Blue Top Tube;  See Important Comments
  Pediatric: 1.8 mL Blood Pediatric Light Blue Top Tube
Unspun: 4 hours
Room temperature: 4 hours
Frozen: 14 days (platelet poor plasma only)
Availability Routine: 24 Hours/Day
Turnaround Time   STAT 90.minutes, Routine 3 hrs.
Reference Range Normal: 57-176% of Normal
  Critical: <10% of Normal
Comments Deliver Immediately: If more than 2 Factor Assays are ordered: 2 Light Blue Top Tubes need to be drawn. Draw tube must be allowed to fill completely.  Short draws will be rejected.

Reviewed by jcayless on December 13, 2019

Note: Reference ranges provided on this web site are for guidance only, and may not reflect the most recent changes. Refer to laboratory reports for current reference data.

UNC Hospitals
McLendon Clinical Laboratories
101 Manning Drive
Chapel Hill, NC 27514