Factor 13 activity

Alphabetical Test listing

Factor 13 activity-994

  
Factor 13 activity
  
994
  
LAB994
  
MSO
  
Factor XIII activity
  

Detect homozygous and heterozygous as well as acquired factor 13 deficiency

  
Sodium citrate (Na cit) plasma
  
  
2.0 mL
  
  • Blood should be collected in a blue-top tube containing 3.2% buffered sodium citrate
  • Evacuated collection tubes must be filled to completion to ensure a proper blood-to- anticoagulant ratio
  • The sample should be mixed immediately by gentle inversion at least six times to ensure adequate mixing of the anticoagulant with the blood
  • A discard tube is not required prior to collection of coagulation samples unless the sample is collected using a winged (butterfly) collection system
    • With a winged blood collection set a discard tube should be drawn first to account for the dead space of the tubing and prevent under-filling of the evacuated tube
  • When noncitrate tubes are collected for other tests, collect sterile and nonadditive (red-top) tubes prior to citrate (blue-top) tubes
    • Any tube containing an alternative anticoagulant should be collected after the blue-top tube
    • Gel-barrier tubes and serum tubes with clot initiators should also be collected after the citrate tubes
  • If the patient's hematocrit exceeds 55%, the volume of citrate in the collection tube must be adjusted
  
  1. Centrifuge for 10 minutes and carefully remove 2/3 of the plasma using a plastic transfer pipette, being careful not to disturb the cells.
  2. Deliver to a plastic transport tube, cap, and recentifuge for 10 minutes.
  3. Use a second plastic pipette to remove plasma, staying clear of the platelets at the bottom of the tube.
  4. Transfer the plasma into a Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp) and freeze immediately.
  

Frozen

  
LabCorp Burlington (500185): R-NX
  
Daily
  
1 - 3 days
  

PTT assay

  

60 - 150%

  
85290
  
05/20/2019
  
02/17/2021