Angiotensin I - converting enzyme (ACE)
CPT4 code
Name of the Procedure:
Angiotensin I - Converting Enzyme (ACE) Test
Summary
The Angiotensin I - Converting Enzyme (ACE) test is a blood test that measures the level of ACE in your blood. This enzyme plays a role in regulating blood pressure and fluid balance in your body.
Purpose
The ACE test is used primarily to help diagnose and monitor sarcoidosis, a disease that leads to inflammation, usually in your lungs, skin, or lymph nodes. The test might also be used to understand the causes of other conditions related to high levels of ACE.
Indications
- Persistent shortness of breath
- Chronic cough
- Unexplained skin rashes or lesions
- Enlarged lymph nodes
- Patient history that suggests sarcoidosis or similar inflammatory diseases
Preparation
- No special preparation is required for the ACE test.
- You may need to inform your doctor about any medications you are taking, as some drugs can affect ACE levels.
Procedure Description
- Blood Sample Collection: A healthcare provider will use a needle to draw blood from a vein, typically from your arm.
- Sample Handling: The collected blood sample is sent to a laboratory for analysis.
- Analysis: In the lab, the blood sample is tested to measure the level of ACE.
Duration
The blood collection takes about 5 to 10 minutes. Lab results may take a few days to a week to return, depending on the facility.
Setting
The blood sample is typically collected in a hospital, outpatient clinic, or diagnostic lab.
Personnel
The procedure is performed by a Phlebotomist or a nurse. The analysis of the blood sample is conducted by a Medical Laboratory Technician or Technologist.
Risks and Complications
- Bruising or slight bleeding at the puncture site
- Infection at the puncture site (rare)
- Fainting or dizziness during or after the blood draw
Benefits
- Helps diagnose sarcoidosis and monitor its progression.
- Aids in assessing the effectiveness of sarcoidosis treatment.
- Provides valuable information about other potential inflammatory conditions.
Recovery
- Post-procedure care includes applying pressure to the puncture site to stop the bleeding.
- You can resume normal activities immediately after the blood draw.
- No specific recovery time is needed.
Alternatives
- Chest X-ray or CT scan to look for signs of sarcoidosis in the lungs.
- Lung function tests to evaluate breathing issues related to sarcoidosis.
- Biopsy of affected tissue for a definitive diagnosis.
Patient Experience
- You might feel a brief pinch or slight sting when the needle is inserted.
- Mild soreness or bruising at the puncture site is possible, but usually resolves quickly.
- Most patients find the procedure quick and relatively painless.
Pain management and comfort measures: If you are anxious, informing the healthcare provider can help them take extra steps to ensure comfort, such as using a smaller needle or providing a distraction during the blood draw.