Angiotensin Converting Enzyme, CSF - Laboratory Test Directory

Test Name Alias

LAB3501 | ACE CSF | Quest: 34692 | ACE-CSF, Angiotensin Converting Enzyme, CSF

Interface Order Alias

1231943

Clinical Information

Angiotensin Converting Enzyme (ACE), CSF - ACE, CSF is useful in diagnosing patients with sarcoidosis involving the central nervous system (CNS) and meninges.

Specimen Requirements

Specimen Collection Criteria

Collect: 1.0 mL Cerebrospinal Fluid (CSF) in a sterile collection container. (Minimum: 0.2 mL)

Send specimen for processing immediately after collection.

Physician Office/Draw Specimen Preparation

Maintain specimen frozen (-20°C/-4°F or below) prior to transport.

In-Lab Processing

Maintain specimen frozen (-20°C/-4°F or below) prior to transport.

Specimen Transport Temperature

Transport: 1.0 mL CSF, frozen (-20°C/-4°F or below). (Minimum: 0.2 mL)

Rejection Criteria

Specimens not collected and processed as indicated.

Specimen Stability

Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): 4 days
Refrigerated (2-8°C or 36-46°F): 7 days
Frozen (-20°C/-4°F or below): 60 days

Specimen Storage in Department Prior to Disposal:

Specimen retention time is determined by the policy of the reference laboratory. Contact the Send Outs Laboratory with any questions.

Test Frequency

Performed: Sunday, Tuesday, Thursday
Results available in 3-6 days.

Reference Range

≤15 U/L

Performing Department

Send Outs

Performing Department Laboratory Location

Sent to Quest Diagnostics- Wood Dale, IL

Methodology

Kinetic

CPT

82164

LOINC

Unavailable

Reviewed Date

11/2/2025

Orderable Regions