Angiotensin Converting Enzyme, CSF
Test Mnemonic
CACE
CPT Codes
- 82164 - QTY (1)
LOINC ®
12480-0
Aliases
- ACE, CSF
Performing Laboratory
ARUP
FDA Category
Laboratory Developed Test
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Cerebrospinal fluid (CSF) | Clean container | Frozen | Separate 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 |
|---|---|
| Ambient | 4 hours |
| Refrigerated | 1 week |
| Frozen | 6 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 |
| Years | 99 Years | Normal | 0.0 - 2.5 | U/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.