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Prekallikrein Factor, Activity
Test Code39167
CPT Codes
85292<br /> Limited Access Code
Preferred Specimen
2 mL platelet-poor plasma collected in 3.2% sodium citrate (light blue-top) tube
Instructions
Transfer 2 mL platelet-poor plasma from a light-blue (sodium citrate) to an ARUP Standard Transport Tube. (Min: 1 mL) guidelines.
Refer to Specimen Handling at aruplab.com for hemostasis/thrombosis specimen handling
Transport: CRITICAL FROZEN. Separate samples must be submitted when multiple tests are ordered.
Refer to Specimen Handling at aruplab.com for hemostasis/thrombosis specimen handling
Transport: CRITICAL FROZEN. Separate samples must be submitted when multiple tests are ordered.
Transport Container
ARUP standard transport tube
Transport Temperature
Frozen
Specimen Stability
Room temperature: 4 hours
Refrigerated: Unacceptable
Frozen: 14 days
Refrigerated: Unacceptable
Frozen: 14 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Serum; EDTA plasma; Clotted or hemolyzed specimens
Methodology
Clot Detection
Setup Schedule
Set up: Tues; Report available: 2-9 days
Reference Range
55-207%
Clinical Significance
Evaluate the cause of an isolated prolonged PTT in a patient who is not currently bleeding.
