Laboratory Services
Anti Thrombin Activity
Print this pageUpdated Test Information:
| Test Description |
Anti Thrombin Activity
|
|
|---|---|---|
| Synonym(s) |
Antithrombin 3, Anti Thrombin III, Antithrombin III, UOW882 |
|
| Test ID |
AT3
|
|
| General Information |
Clinical assay interference and limitations: Patients on hirudin (Refludan), bivalidrudin (Angiomax), Dabigatran (Pradaxa), and argatroban (Novastan) may show interference due to the direct thrombin inhibition. This may cause an over-estimation of the antithrombin concentration. Patients on heparin therapy may see decreased antithrombin concentrations. |
|
| Container Type |
3 or 5mL Blue Top (Citrate) Tube |
|
| Specimen Type |
Plasma |
|
| Additional Processing Details |
Centrifuge for 10 minutes, remove plasma & re-spin plasma for another 10 minutes. Decant & Freeze plasma (minimum 1.0 mL) @ -20°C to -80°C. Send Frozen on dry ice. |
|
| Department (code) |
Coagulation |
|
| Methodology |
Optical, Stago Chromogenic Antithrombin Assay |
|
| Testing Schedule |
Monday, Thursday |
|
| CPT Code(s) |
85300 |
|
| Reference Range |
Elevated antithrombin is not associated with thrombosis or bleeding. Female/Male Age Range 0-29d 41-125 1m-2m 48-125 3m- 80-130 |
|
| STAT Orderable (Y/N) |
No |
|
| Performing Lab |
UW |
|
| LOINC Code(s) |
