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HelpTest Code LAB179 Angiotensin Converting Enzyme, Serum
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Reporting Name
Angiotensin Converting Enzyme, SSpecimen Type
SerumNecessary Information
The use of angiotensin converting enzyme (ACE)-inhibiting antihypertensive drugs will cause decreased ACE values. Patients taking ACE inhibitors, such as captopril and enalapril, will have extremely low or unmeasurable ACE activity. Indicate on the request form if the patient is on ACE inhibitors.
Specimen Required
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 0.5 mL
Collection Instructions: Centrifuge and aliquot serum into a plastic vial
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | Reject |
| Gross icterus | Reject |
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 7 days | |
| Frozen | 180 days | ||
| Ambient | 24 hours |
Specimen Minimum Volume
0.5 mL
Day(s) Performed
Monday through Friday
Specimen Retention Time
7 daysReport Available
1 to 3 daysReference Values
≥18 years: 16-85 U/L
0-17 years: Angiotensin converting enzyme activity may be 20-50% higher in healthy children compared to healthy adults.
For SI unit Reference Values, see https://www.mayocliniclabs.com/order-tests/si-unit-conversion.html
Useful For
Evaluation of patients with suspected sarcoidosis
CPT Code Information
82164
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| ACE | Angiotensin Converting Enzyme, S | 2742-5 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| ACE | Angiotensin Converting Enzyme, S | 2742-5 |
Disease States
- Sarcoidosis
Forms
If not ordering electronically, complete, print, and send 1 of the following forms with the specimen:
-General Request (T239)
-Cardiovascular Test Request (T724)