Days Set Up
Monday, Wednesday, Friday
Analytic Time

1 - 5 days

MiChart Code
ACE (Angiotensin Converting Enzym), CSF
Soft Order Code

Test Updated:


Angiotensin Converting Enz CSF

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Test Overview

Test Methodology

Quantitative Spectrophotometry

Test Usage

CSF levels of angiotensin converting enzyme (ACE) are increased in approximately 50% of patients with neurosarcoidosis, but in less than 10% of systemic sarcoidosis patients without neurologic manifestations.

Reference Range

0.0 - 2.5 U/L

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements


Collect spinal fluid and freeze (preferred) or refrigerate for up to 7 days.

Normal Volume
1 mL CSF
Minimum Volume
0.3 mL CSF

Billing Information

CPT Code
Pro Fee Code

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.