Ordering Recommendation

Support diagnosis of neurosarcoidosis. May be used to evaluate treatment response.

Mnemonic
ACE CSF
Methodology

Quantitative Spectrophotometry

Performed

Mon, Wed, Fri

Reported

Between 1 and 5 days

New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Collect

CSF.

Specimen Preparation

Separate from cells within 1 hour of collection. Transfer 1 mL CSF to an ARUP Standard Transport Tube. (Min: 0.5 mL)

Storage/Transport Temperature

Frozen.

Unacceptable Conditions

CSF containing gadolinium-based contrast agents. Hemolyzed or xanthochromic specimens.

Remarks
Stability

Ambient: 4 hours; Refrigerated: 1 week; Frozen: 6 months

Reference Interval

0.0-2.5 U/L

Interpretive Data

This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.

Compliance Category

Laboratory Developed Test (LDT)

Note

Gadolinium contrast agents have been reported to inhibit ACE activity. Therefore, CSF containing gadolinium-based contrast agents should not be submitted to the laboratory for evaluation.

Hotline History
N/A
CPT Codes

82164

Components
Component Test Code* Component Chart Name LOINC
0098974 Angiotensin Convert Enzyme CSF 12480-0
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • ACE
Angiotensin Converting Enzyme, CSF