C1 Esterase Inhibitor Functional
Test Mnemonic
C1EFUN
CPT Codes
- 86161 - QTY (1)
LOINC ®
10634-4
Aliases
- C1 Inactivator
Performing Laboratory
ARUP
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.5 mL | Serum | SST (Gold) | Frozen, Critical | CRITICAL FROZEN. Separate serum from cells ASAP or within 2 hours of collection and transfer into standard aliquot tube. Freeze immediately. Separate specimens must be submitted when multiple tests are ordered. |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.1 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | After separation from cells: 2 hours |
| Frozen | After separation from cells: 2 weeks |
| Refrigerated | After separation from cells: Unacceptable |
Days Performed
Sun, Wed, Fri
Turnaround Time
2 - 5 days
Methodology
| Name | Description |
|---|---|
| Enzyme-Linked Immunosorbent Assay (ELISA) |
Reference Range
| C1 Esterase Inhibitor Functional | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| Years | 99 Years | Normal | Normal: >= 68 | % | Years | 99 Years | Normal | Indeterminate: 41 - 67 | % | Years | 99 Years | Normal | Abnormal: <= 40 | % |
Special Info
CRITICAL FROZEN. Separate samples must be submitted for multiple tests. Unfrozen samples are not acceptable. This test is New York DOH approved.
Clinical Info
Evaluation of acquired hereditary angioedema.