Ordering Recommendation

Evaluate for 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.
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
Age Reference Interval Age Reference Interval
1-4 days 12-68% 7-9 years 74-130%
5-29 days 19-79% 10-11 years 70-134%
30-89 days 31-87% 12-13 years 69-133%
90-179 days 35-107% 14-15 years 63-146%
180-364 days 38-118% 16-17 years 74-146%
1-5 years 58-116% 18 years and older 81-157%
6 years 55-101%

Interpretive Data



Compliance Category

Standard

Note

Do not order for FXa level.  Refer to Heparin Anti-Xa, Low Molecular Weight Heparin (0030144) or Heparin Anti-Xa, Unfractionated (0030143).

Hotline History
N/A
CPT Codes

85260

Components
Component Test Code* Component Chart Name LOINC
0030105 Factor X, Activity 3218-5
* 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
  • Clot Based Factor X Activity
  • Coagulation Factor X Activity Assay, Plasma
  • Common Pathway Proteins, Factor X
  • F10
  • Stuart Factor
  • Stuart-Prower Factor
Factor X, Activity