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Mayo Clinic Laboratories

Catalog ID Factor XIII Factor XIII

CPOE Test Name

Factor XIII Qualitative

Synonyms

Fibrin Stabilizing Factor

Specimen Type

Plasma

Specimen Requirements

Light Blue Top (Sodium Citrate) tube; 2.7 mL blood

Causes for Rejection

Improperly filled tube; clotted specimen; hemolysis; improper labeling; insufficient quantity; delay in transport

Turn Around Time

Batch testing

CPT / HCPCS Code

85290

Performing Lab

Core Laboratory BI 2023 721-2120

Storage and Transport

Room temperature. Transport to the lab immediately.

Special Instructions

Always allow blue top/citrate tubes to fill completely.

Reference Range

Greater than 24 hours for clot dissolution.

Interpretation

The clot should not dissolve in less than 24 hours.

Test Consists

Qualitative assay of factor XIII

Methodology

Stability of clot in a weak acid.

CPT/HCPCS Code