Test Code AT3 Antithrombin III Activity
Additional Codes
| PathLab | AT3 |
| Epic ID | LAB311 |
Specimen Requirements
Preferred Collection Container:
Light Blue (Citrate)
Collection Information:
Promptly after collection, spin down and place 1 mL of platelet-poor plasma in plastic vial. (Glass vial is not acceptable.) Freeze specimen immediately at ≤ -40° C, if possible.
Minimum Sample Volume:
0.5 mL
Stability/Transport
| Temperature | Stability | Preferred Transport |
| Refrigerated | Not acceptable | |
| Frozen | 30 days | X |
| Room Temp | 8 hours |
Unacceptable Conditions
Hemolyzed or lipemic specimens.
Performing Lab
Pathology Laboratory
Methodology
Chromogenic Assay
Day(s) Performed
Tuesday and Thursday
CPT Code Information
85300