ARUP's Laboratory Test Directory

0099043: Prekallikrein Factor, Activity

Test Mnemonic: PREKALL
Methodology: Clotting

Performed: Tue

Reported: 1-8 days

Specimen Required:  
Collect: One 5 mL lt. blue (sodium citrate).  Refer to the Hemostasis/Thrombosis Specimens section in the front of this User's Guide for special collection instructions.

Transport: 2 mL platelet-poor plasma, frozen. (Min: 1 mL) Submit specimen in an ARUP Standard Transport Tube.

Pediatric Collection/Transport: 1 mL platelet-poor plasma, frozen.

Remarks: CRITICAL FROZEN. Separate samples must be submitted when multiple tests are ordered.

Unacceptable Conditions: Serum and nonfrozen or hemolyzed specimens. 

Stability: Ambient: 4 hours; Refrigerated: 4 hours; Frozen: 2 weeks

Reference Interval:
55-207%

CPT Code(s):
85292

 

 

 
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