Factor 13 screen

Alphabetical Test listing

Factor 13 screen-994

Factor 13 screen
Factor XIII
Factor XIII-qualitative
Fibrin stabilizing factor

This is a screening assay and will detect homozygous deficiency of factor XIII

Sodium citrate (Na cit) plasma
1.0 mL
1.0 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.
  1. Spin
  2. Transfer plasma to a Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp), labelled as Na cit plasma
  3. Freeze

Frozen (strict)

  • Gross hemolysis
  • Clotted specimen
  • Samples thawed in transit


LabCorp Burlington (086330): R-NX
5 days

Clot solubility. The plasma is treated with thrombin to induce clot formation and the clot is transferred to 5 molar urea solution. Clots from individuals with normal factor XIII levels are stable for at least 24 hours while clots from XIII deficient individuals will dissolve rapidly.



Result 3241-7