Angiotensin-Converting Enzyme
General
Synonym/Acronym:
angiotensin I–converting enzyme (ACE).
Rationale
To assist in diagnosing, evaluating treatment, and monitoring the progression of sarcoidosis, a granulomatous disease that primarily affects the lungs.
Patient Preparation
There are no food, fluid, or medication restrictions unless by medical direction.
Normal Findings
Method: Enzymatic.
| Age | Conventional Units | SI Units (Conventional Units × 16.667) | 
|---|---|---|
| Newborn–6 yr | 18–90 units/L | 300–1,500 nKat/L | 
| 7–14 yr | 24–121 units/L | 400–2,017 nKat/L | 
| 15–17 yr | 18–101 units/L | 300–1,683 nKat/L | 
| Adult | 16–85 units/L | 267–1,417 nKat/L | 
Critical Findings and Potential Interventions
N/A
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Citation
Van Leeuwen, Anne M., and Mickey Lynn. Bladh. "Angiotensin-Converting Enzyme." Davis's Lab & Diagnostic Tests, 11th ed., F.A. Davis Company, 2025. Nursing Central, nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425318/all/Angiotensin_Converting_Enzyme. 
Van Leeuwen AMA, Bladh MLM. Angiotensin-Converting Enzyme. Davis's Lab & Diagnostic Tests. F.A. Davis Company; 2025. https://nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425318/all/Angiotensin_Converting_Enzyme. Accessed November 4, 2025.
Van Leeuwen, A. M., & Bladh, M. L. (2025). Angiotensin-Converting Enzyme. In Davis's Lab & Diagnostic Tests (11th ed.). F.A. Davis Company. https://nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425318/all/Angiotensin_Converting_Enzyme
Van Leeuwen AMA, Bladh MLM. Angiotensin-Converting Enzyme [Internet]. In: Davis's Lab & Diagnostic Tests. F.A. Davis Company; 2025. [cited 2025 November 04]. Available from: https://nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425318/all/Angiotensin_Converting_Enzyme.
* Article titles in AMA citation format should be in sentence-case
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Davis's Lab & Diagnostic Tests

