| Ordering Code | 710 |
|---|---|
| Test Name | Anti-Thrombin III |
| Alias | Antithrombin III, Functional Heparin Cofactor II Activity Antithrombin Activity AT III AT Heparin Resistance |
| Preferred Specimen | Plasma |
| Preferred Container | Citrate, 3.2% (Lt Blue) |
| Other Specimen/Container | Whole Blood in Citrate, 3.2% (Lt Blue) if testing is done within 4 hours. |
| Optimum Volume | Plasma = 1 mL Whole Blood = Entire tube |
| Collection Instructions | Draw full tube Mix tube well. |
| Handling Instructions | Double centrifuge plasma, separate, and freeze at -20 deg. C immediately. Do NOT thaw once specimen is frozen. |
| Transport Requirements | Preferred method of transport is frozen plasma. |
| Specimen Stability | Ambient: 4 hours Whole Blood (unopened tube) Ambient: 8 hours Plasma Frozen: 1 month Plasma |
| Rejection Criteria | Clotted, Contaminated, Hemolyzed, Improperly filled or underfilled tube, Specimen older than stability limits. |
| Avail. Stat | NO |
| Analytic Time | Up to 1 Week |
| Methodology | Chromogenic substrate |
Reference range(s)
The reference ranges listed below are valid on this date of November 21, 2024.
| Component | Age | Male Norm | Male Critical Low | Male Critical High | Female Norm | Female Critical High | Female Critical Low | Units | Add'l info |
|---|---|---|---|---|---|---|---|---|---|
| Anti-Thrombin III | >=7M | 80-120 | 80-120 | % | |||||
| Anti-Thrombin III | 0-6M | % | See report. |