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Test Code LAB5076 Factor VIII Assay

Useful For

Detection of coagulant Factor VIII deficiency. 

Factor VIII deficiency (hemophilia A) is the most common of the hereditary bleeding disorders.  Clinical features are the same as for Factor IX deficiency (see Factor IX). 

Performing Laboratory

Asante Rogue Regional Medical Center (ARRMC)

 

Performing Department

Hematology

Specimen Required

Blue top tube - Refer to ORDER OF DRAW

 

Note:  The ratio of blood to anticoagulant is critical.

Vacutainers must draw their full volume.

Syringe Draw:     

2.7 mL blood in 3 mL Blue top tube

1.8 mL blood in 2 mL Blue top tube

 

 

Specimens will not be accepted if tubes are not filled to their correct volume.

 

If multiple tests are drawn, draw coagulation studies first or second

Specimen Minimum Volume

1 properly filled 2 mL Blue top tube

Specimen Stability Information

Stable 4 hours unopened or opened, room temperature or refrigerated

Reject Due To

Quantity not sufficient (QNS)

Specimens not filled to correct volume

Lacking Two Patient Identifiers:

         1-Patient's First & Last name 

         2-Patient's Date of Birth

Day(s) Performed

Monday through Sunday

 

Report Available

  • Routine - same day
  • ASAP - 2 hours after receipt of specimen in lab
  • STAT - 1 hour after receipt of specimen in lab

Method Name

Turbidimetric clot detection by measuring change in optical density

CPT Code Information

85240  -  Clotting; factor VIII (AHG)

Billing Code

2010312