Angiotension-Converting Enzyme

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Latest Edit: Hector 2014-03-21 (EDT)

See Also Lab Tests

The angiotension-converting enzyme or ACE test is used to help diagnose and monitor sacroidoisis and to help differentiate this systemic condition fro other disorders causing similar symptoms.[1], [2]


  • The symptoms that typically indicate the need to run this test include granulomas that create small bumps under the skin, a lingering cough, red watery eyes, and/or symptoms suggestive of sarcoidosis.
  • This test measures the amount of angiotension-converting enzyme (ACE) in the blood. ACE is an enzyme that helps regulate blood pressure. It assists in the conversion of angiotension I (an inactive protein) to angiotension II.

Patient Preparation

  • No fasting required.
  • Factors which can cause decreased levels
  • Medications, such as ACE inhibitors that are used to lower blood pressure.

Clinical Implications

High levels indicate:

Low levels indicate:

Associated Tests


  1. Pagana Kathleen D, Pagana Timothy J (2006) Mosby's Manual of Diagnostic and Laboratory Tests, Mosby.
  2. Weatherby Dicken, Ferguson Scott (2002) Blood Chemistry and CBC Analysis: Clinical Laboratory Testing from a Functional Perspective, Bear Mountain.