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Factor XI, Activity
0030110
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Ordering Recommendation
Order to diagnose factor XI deficiency (hemophilia C).
Mnemonic
F11
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 | 10-66% | 7-9 years | 70-138% |
| 5-29 days | 23-87% | 10-11 years | 66-137% |
| 30-89 days | 27-79% | 12-13 years | 68-138% |
| 90-179 days | 41-97% | 14-15 years | 57-129% |
| 180-364 days | 38-134% | 16-17 years | 65-159% |
| 1-5 years | 56-150% | 18 years and older | 56-153% |
| 6 years | 52-120% |
Interpretive Data
Compliance Category
Standard
Note
Hotline History
N/A
CPT Codes
85270
Components
| Component Test Code* | Component Chart Name | LOINC |
|---|---|---|
| 0030110 | Factor XI, Activity | 3226-8 |
* 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
- Antihemophilic Factor C
- Coagulation Factor XI Activity Assay, Plasma
- F11
- Factor XI Activity Assay
- Intrinsic Factor Proteins
- Intrinsic Factors
- Plasma Thromboplastin Antecedent (PTA)
Factor XI, Activity
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