Factor IX Assay

Test Code
FAC9


Alias/See Also
Factor 9 Activity


CPT Codes
85250

Preferred Specimen
4.5 ml of whole blood preferred (tube must be filled to the line)


Minimum Volume
2.7 ml of whole blood preferred (tube must be filled to the line)


Instructions
Collect one full sodium citrate tube (blue top).  Send to lab immediately.  If the specimen needs to be transported, centrifuge the specimen, aliquot the specimen into a separate container, spin again, aliquot the specimen into a new container and freeze.


Transport Container
Sodium Citrate (blue top)


Transport Temperature
Frozen


Specimen Stability
Specimen must be centrifuged within one hour of collection. 

Room Temperature: 4 hours (centrifuged)
Refrigerated: Not acceptable
Frozen: 30 days


Methodology
Clotting aPTT Based

Setup Schedule
Set up Monday - Friday.


Report Available
Turn around time: Routine 24 hours, stat 1.5 hours.




The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.