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Test Code F9AS Factor IX Assay, Blood

Additional Codes

Epic Code


Performing Laboratory

Bronson Methodist Hospital Laboratory

Reference Values

70-130% of normal

Specimen Requirements

Specimen Type: Whole blood

Container/Tube: Blue top (sodium

Specimen Volume: Full tube (4.5 mL)

Collection Instructions:

1. Tube must be filled to minimum indicator line on tube.

2. Gently invert 5 to 10 times to mix blood. Do

3. Place on wet ice immediately.

4. Causes for rejection include tube <75% full and
clotted specimen.

Laboratory Processing Instructions:

1. Spin down, remove plasma, and spin plasma
to obtain platelet poor plasma.

2. Separate platelet poor plasma into separate screw top

3. Freeze plasma immediately.

Specimen Transport Temperature

Ambient (15-25°C) 4 hours/Frozen (<18°  C)
4 weeks if frozen within 4 hours of draw. 

Day(s) Test Set Up

Routine and ASAP:  Monday through Sunday, day shift

STAT:  24/7

Test Classification and CPT Coding