Factor 13 screen

Alphabetical Test listing

Factor 13 screen-994

Test name:

Factor 13 screen

Test number:

994

Excellian order number:

LAB994

Abbreviation:

MSO

Alternate names:

Factor XIII
Factor XIII-qualitative
Fibrin stabilizing factor

Useful for:

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

Specimen type:

Sodium citrate (Na cit) plasma

Collection container:

Lt blue Sodium citrate (NaCit) - 2.7mL

Volume:

1.0 mL

Minimum volume:

1.0 mL

Collection instructions:

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.

Processing instructions:

Spin
Transfer plasma to a Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp), labelled as Na cit plasma
Freeze

Transport container:

Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp)

Transport and stability:

Frozen (strict)

Reason for rejection:

Gross hemolysis
Clotted specimen
Samples thawed in transit

Performing lab:

LabCorp Burlington (086330): R-NX

Days set up:

Daily

TAT:

5 days

Method:

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.

Reference ranges:

Normal

CPT codes:

85291

LOINC code:

Result 3241-7

Date created:

05/29/2019

Revised date:

04/08/2022

Review date:

03/30/2022