Factor XII, Activity
0030115
Ordering Recommendation
Submit With Order
Mnemonic
F12
Methodology
Clotting
Performed
Mon-Fri
Reported
1-4 days
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
 
Collect
Lt. blue (sodium citrate). Refer to Specimen Handling at aruplab.com for hemostasis/thrombosis specimen handling guidelines.  
Specimen Preparation
Transfer 2 mL platelet-poor plasma to an ARUP Standard Transport Tube. (Min: 1 mL)  
Storage/Transport Temperature
CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.  
Unacceptable Conditions
Serum. Non-frozen or hemolyzed specimens.  
Remarks
 
Stability
Ambient: 4 hours; Refrigerated: 4 hours; Frozen: 2 weeks  
Reference Interval
58-166%
Interpretive Data
Note
CPT Code(s)
85280
Components
Component Test Code*Component Chart Name
0030115Factor XII, Activity
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Cross References
  • Coagulation Factor XII Activity Assay, Plasma
  • Factor X11a
  • Hageman factor
  • Hageman Factor (Contact Factor)
  • Intrinsic Factor Proteins
  • Intrinsic Factors
  • Surface Factor