Coagulation Factor Inhibitor Quantitation
Label Mnemonic: IQ*
Downtime Form: A-1a Miscellaneous Request
Hemostasis/Thrombosis
6240 RCP
356-3573
Specimen(s):
Collection Medium:
and
Light Blue top tube 2.7 mL (Na Citrate) Light Blue top tube 2.7 mL (Na Citrate)
Minimum:
Full draw; TWO 2.7 mL light blue top. Deliver to lab promptly.
Rejection Criteria:
Short drawn tube, clot, traumatic tap (excessive hemolysis).
Delivery Instructions:
Deliver to laboratory immediately after collection.
Testing Schedule:
0800-1630 Monday through Friday. For additional services, contact Clinical Pathology Resident on-call at pager #3404.
Turn Around Time:
24 hours (upon receipt in laboratory)
Reference Range:
Negative
Quantitates inhibitors > 10 B.U.
Comments:
Must have Hematology Consult approval from pager 4326.

Results expressed in Bethesda units when an inhibitor is detected.
Methodology:
Optical clot detection.
CPT Code:
Computer CPT Code Name Code IQ2 Factor II Quant Inhibitor 85335 IQ5 Factor V Quant Inhibitor 85335 IQ7 Factor VII Quant Inhibitor 85335 IQ8 Factor VIII Quant Inhibitor 85335 IQ9 Factor IX Quant Inhibitor 85335