Antithrombin
General
Synonym/Acronym:
Antithrombin III, Antithrombin-heparin cofactor, AT, AT-III.
Rationale
To assist in diagnosing heparin resistance or disorders resulting from a hypercoagulable state such as thrombus.
Patient Preparation
There are no food, fluid, activity, or medication restrictions unless by medical direction.
Normal Findings
Method: Chromogenic for AT activity; Microlatex particle-mediated immunoassay for AT antigen.
AT Activity | |
---|---|
Age | Conventional Units (% of Normal) |
Newborn | 39–87 |
Child | 82–139 |
Adult–older adult | 80–120 |
AT-III antigen | |
Age | Conventional Units (% of Normal) |
Newborn | 40–60 |
6 mo–adult | 82–136 |
Critical Findings and Potential Interventions
N/A
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Citation
Van Leeuwen, Anne M., and Mickey Lynn. Bladh. "Antithrombin." Davis's Lab & Diagnostic Tests, 10th ed., F.A. Davis Company, 2023. Nursing Central, nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425209/all/Antithrombin.
Van Leeuwen AMA, Bladh MLM. Antithrombin. Davis's Lab & Diagnostic Tests. F.A. Davis Company; 2023. https://nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425209/all/Antithrombin. Accessed November 13, 2024.
Van Leeuwen, A. M., & Bladh, M. L. (2023). Antithrombin. In Davis's Lab & Diagnostic Tests (10th ed.). F.A. Davis Company. https://nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425209/all/Antithrombin
Van Leeuwen AMA, Bladh MLM. Antithrombin [Internet]. In: Davis's Lab & Diagnostic Tests. F.A. Davis Company; 2023. [cited 2024 November 13]. Available from: https://nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425209/all/Antithrombin.
* Article titles in AMA citation format should be in sentence-case
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AU - Van Leeuwen,Anne M,
BT - Davis's Laboratory & Diagnostic Tests
UR - https://nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425209/all/Antithrombin
PB - F.A. Davis Company
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