Complement C9 Functional
Test Mnemonic
C9FUN
CPT Codes
- 86161 - QTY (1)
LOINC ®
87727-4
Includes
- C9 Complement, Functional, S
Performing Laboratory
Mayo Clinic Dpt of Lab Med & Pathology
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Serum | SST (Gold) | Place specimen on ice after draw. | Frozen, Critical | Fasting preferred. Place tube on wet ice immediately after collection and allow specimen to clot. Separate serum from cells and transfer to standard aliquot tube. Freeze immediately. |
Alternate Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Serum | No additive (Red) | Place specimen on ice after draw. | Frozen, Critical | Fasting preferred. Place tube on wet ice immediately after collection and allow specimen to clot. Separate serum from cells and transfer to standard aliquot tube. Freeze immediately. |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.5 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Frozen | 14 days |
| Ambient | Unacceptable |
| Refrigerated | Unacceptable |
Days Performed
Mon - Fri
Turnaround Time
2 - 4 days
Methodology
| Name | Description |
|---|---|
| Turbidimetry (TURB) |
Reference Range
| Complement C9 Functional | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| Normal | > or = 60 | U/mL |
Special Info
Grossly lipemic specimens are unacceptable.
Clinical Info
Absent (or low) C9 functional levels in the presence of normal C9 antigen levels should be replicated with a new serum specimen to confirm that C9 inactivation did not occur during shipping.