Test Overview
Test Methodology

Chromogenic Assay

Test Usage

First-line test to diagnose FXIII deficiency. Appropriate for evaluation of patients with a bleeding disorder present with normal PT, PTT, and platelet count test results. Use for monitoring FXIII therapy and for confirming abnormalities detected on FXIII qualitative assay.

Reference Range *

69 - 143%

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Analytic Time

1 - 2 days

Soft Order Code
Reference Laboratory
ARUP 2006182
Special Testing
Specimen Requirements
Collection Instructions

Collect specimen in blue top (citrate 3.2%) tube. Mix by inversion. Specimen should arrive at lab within 3 hours of collection; transport at room temperature. Alternatively, centrifuge, and aliquot plasma into a polypropylene plastic vial, and freeze the specimen within 4 hours of collection. Transport frozen specimen on dry ice. Collection of the blood through lines that have been previously flushed with heparin should be avoided. If the blood must be drawn through a VAD (vascular access device); the line should be flushed with 5mL of saline and the first 5mL of blood or six dead space volumes of the VAD discarded.

Blue Top Tube
Normal Volume
Full 2.7 mL tube or 2 mL plasma aliquot
Minimum Volume
Full 1.8 mL tube or 1 mL plasma aliquot
Additional Information

Test sent to ARUP Laboratories.

CPT Code