Prekallikrein Factor Activity - LG6576


Sunquest Code:ARMISC  
Epic Code:LAB4909Epic Name:Send Outs Misc Test
Methodology:Electromagnetic mechanical clot detection
CPT Code:85292
Turnaround Time:Specimens are sent to the reference laboratory Mon-Sat; results are reported within 1-8 days.
Special Instructions:Send  platelet-poor plasma for testing. See Associated Links for Specimen Collection and Processing for Coagulation Specimens.
Associated Links:

Specimen Collection and Processing for Coagulation Specimens



Collection Instructions

Specimen:Blood
Optimal Volume:2.7 mL (in 3 mL tube) - filled to fill line on the tube.
Minimum\Peds Volume:1.8 mL (in 2 mL tube) - filled to fill line on the tube.
Causes for Rejection:Over-filled or under-filled tubes. Serum, EDTA plasma, clotted or hemolyzed specimens.


Processing and Shipping

Specimen Processing:See Specimen Collection and Processing for Coagulation Specimens. Aliquot 2 mL, 1 mL minimum, platelet-poor plasma. CRITICAL FROZEN. Separate samples must be submitted when multiple tests are ordered.
Shipping Instructions:Ship on dry ice.
Test Performed at or Referral Lab Lab Sendouts  (ARUP)
Referral Lab number:99043


Interpretive

Reference Range:55-207%
Use:Evaluate the cause of an isolated prolonged PTT in a patient who is not currently bleeding.


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