General Information

UPHSM LIS Test #: 6026582
Schedule: Monday-Friday
Testing Time: 1 Day
Testing Lab: Mayo Labs

Specimen Info
Only 1 specimen type required, unless otherwise specified

Volume: 1.0 mL
Temperature: Frozen
Tube Type: Citrate Plasma
Collection Info:
Collection Instructions:
1. Spin down, remove plasma, and spin plasma again.
2. Freeze specimen immediately at < or =-40 degrees C, if possible.

Additional Information:
1. Double-centrifuged specimen is critical for accurate results as platelet contamination may cause spurious results.
2. Each coagulation assay requested should have its own vial.
3. Heparin treatment may lower plasma antithrombin.

Patient Preparation: Fasting preferred

Specimen Acceptability

Reject Due To
Hemolysis: Mild OK; Gross reject
Lipemia: Mild OK; Gross reject
Icterus: Mild OK; Gross reject


latex immunoassay (LIA) methodology

Clinical Utilities

Assessing abnormal results of the antithrombin activity assay (ATTF / Antithrombin Activity, Plasma), which is recommended as the primary (screening) antithrombin assay
Diagnosing antithrombin deficiency, acquired or congenital, in conjunction with measurement of antithrombin activity
An adjunct in the diagnosis and management of carbohydrate-deficient glycoprotein syndromes

CPT Codes


* The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding
is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.