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Factor X, Activity
0030105
Ordering Recommendation

Evaluate possible factor X deficiency.

Mnemonic
F10
Methodology
Electromagnetic Mechanical Clot Detection
Performed
Mon-Sat
Reported
1-3 days
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
ARUP Consult®
Disease Topics
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. EDTA plasma, clotted or hemolyzed specimens. 
Remarks
 
Stability
Ambient: 4 hours; Refrigerated: Unacceptable; Frozen: 2 weeks 
Reference Interval
1-4 days: 12-68%
5-29 days: 19-79%
30-89 days: 31-87%
90-179 days: 35-107%
180-364 days: 38-118%
1-5 years: 58-116%
6 years: 55-101%
7-9 years: 74-130%
10-11 years: 70-134%
12-13 years: 69-133%
14-15 years: 63-146%
16-17 years: 74-146%
18 years and older: 81-157%
Interpretive Data


Note
Do not order for FXa level.  Refer to Heparin Anti-Xa, Low Molecular Weight Heparin (0030144) or Heparin Anti-Xa, Unfractionated (0030143).
CPT Code(s)
85260
Components
Component Test Code*Component Chart NameLOINC
0030105Factor X, Activity3218-5
* 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.
Aliases
  • F8
  • Clot Based Factor X Activity
  • Coagulation Factor X Activity Assay, Plasma
  • Common Pathway Proteins, Factor X
  • Stuart Factor
  • Stuart-Prower Factor