Angiotensin Converting Enzyme, CSF




Test Mnemonic

CACE

CPT Codes

  • 82164 - QTY (1)

LOINC ®

12480-0

Aliases

  • ACE, CSF

Performing Laboratory

ARUP


Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
1 mLCerebrospinal fluid (CSF)Clean container FrozenSeparate from cells within one hour of collection and transfer CSF to standard aliquot tube

Minimum Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
0.5 mL     

Stability

Environmental Condition Description
Ambient4 hours
Refrigerated1 week
Frozen6 months

Days Performed

Mon, Wed, Fri

Turnaround Time

2 - 6 days

Methodology

Name Description
Spectrophotometry (S) 

Reference Range

Angiotensin Converting Enzyme, CSF
Sex Age From Age To Type Range Range Unit
   Years99 YearsNormal0.0 - 2.5U/L

Special Info

Cerebrospinal fluid (CSF) containing gadolinium-based contrast agents are unacceptable. Hemolyzed or xanthochromic samples will be rejected. This test is New York DOH approved.

Clinical Info

Support diagnosis of neurosarcoidosis. May be used to evaluate treatment response. Gadolinium contrast agents have been reported to inhibit angiotensin converting enzyme (ACE) activity. Therefore, cerebrospinal fluid (CSF) containing gadolinium-based contrast agents should not be submitted to the laboratory for evaluation.