Test Code NF8A FACTOR VIII (8) ACTIVITY
Specimen
- Draw blood in light blue top (3.2% sodium citrate) tube. Separate plasma from cells within one hour of collection in a centrifuge at 3000RPM for 10 minutes.
- Using a plastic (not glass) transfer pipette decant plasma to a plastic vial. Divide specimen into 1 ml aliquot.
- Freeze specimen immediately.
Note: Label specimen with patient’s name (first and last), date of birth, date and time of draw, and phlebotomist’s initials.
Performing Location
NORDX
CPT Code
85240
Collection Container
3.2% sodium citrate (light blue top)
Specimen Transport Temperature
Frozen </= -40
Day(s) Test Set Up
Monday through Friday 8 a.m. – 3 p.m.
Volume
2.0 ml
Units of Measure
%
LOINC
3209-4
Methodology
Clot Detection