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Prekallikrein Factor, Activity
0099043
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Ordering Recommendation
Evaluate the cause of an isolated prolonged PTT in a patient who is not currently bleeding.
Mnemonic
PREKALL
Methodology
Electromagnetic Mechanical Clot Detection
Performed
Tue
Reported
1-8 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 samples 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
55-207%
Interpretive Data
Compliance Category
Standard
Note
Hotline History
N/A
CPT Codes
85292
Components
| Component Test Code* | Component Chart Name | LOINC |
|---|---|---|
| 0099043 | Prekallikrein (Fletcher) Assay | 52759-8 |
* 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
- Fletcher Factor
Prekallikrein Factor, Activity
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