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Antithrombin III

Alternative Names:
A-Th3; AT III

Normal Values:

The normal range is 0.20-0.45 mg/ml (milligrams per milliliter).



What abnormal results mean:

Lower-than-normal AT III may indicate an increased risk of clotting. Examples of disorders and/or conditions associated with increased blood clotting include:

Other conditions that can be related to lower-than-normal AT III include: Higher-than-normal AT III may indicate:
  • use of anabolic steroids



Review Date: 2/3/2005
Reviewed By: Rita Nanda, M.D., Department of Hematology/Oncology, University of Chicago Medical Center, Chicago, IL. Review provided by VeriMed Healthcare Network.

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