Complement C 1
Test Mnemonic
COMPC1
CPT Codes
- 86161 - QTY (1)
Aliases
- C1 Complement Component
- Complement (C1 Function)
- Hemolytic Assay (C1 Function)
Performing Laboratory
National Jewish Health
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Serum | No additive (Red) | Frozen, Critical | Critical Frozen. Allow blood to clot for 20 - 60 minutes at room temperature or 37 degrees C, then centrifuge and aliquot serum into standard aliquot tube and freeze immediately on dry ice or at -70 degrees C. Do NOT draw gel separator tubes. Separate specimens must be submitted when multiple tests are ordered. |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.25 mL | Note: Preferred volume is 1 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Frozen | Frozen at minus 70 °C for 1 year |
| Refrigerated | Unacceptable |
| Ambient | Unacceptable |
Days Performed
First Thursday of the Month
Turnaround Time
29 - 31 days
Methodology
| Name | Description |
|---|---|
| Quantitative Hemolytic Assay |
Reference Range
| Complement C 1 | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| 116,373 – 264,072 Units/mL |
Special Info
Critical Frozen. Thawed specimens are unacceptable. Specimens stored at -20 degrees C are unacceptable. Serum from a plain (no additive) red top tube is the only acceptable specimen type. Gel separator tubes are not acceptable. Send frozen serum Priority Overnight via FedEx in a well-insulated container on dry ice. Separate specimens must be submitted when multiple tests are ordered.