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Catalog ID Hep Xa Heparin Xa

CPOE Test Name

Xa Heparin, Anti-Xa,Heparin Level Assay, Factor Xa Heparin

Synonyms

Heparin assay

Specimen Type

Plasma

Specimen Requirements

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

Storage and Transport

Room temperature. Transport to the lab immediately.

Special Instructions

Always allow blue top/citrate tubes to fill completely.

Causes for Rejection

Improper filling; clotted or hemolyzed specimen; improper labeling; insufficient quantity; delay in transport

Reference Range

0.3 – 0.7 units/mL

Critical Values

>0.7IU/mL

Turn Around Time

24/7/365

Performing Lab

Core Laboratory BI 2023 721-2120

Test Consists

Anti-Xa

Methodology

Chromogenic Assay

CPT/HCPCS Code

85520