| Test Name: | Complement Component 4 (C4) |
| Epic Order Code: | LAB151 |
| CPT Code: | 86160 | | |
| Specimen(s) Type: | Plasma or Serum, 1.0 mL |
| Acceptable Container(s): |    Tops are light green, gold and red. |
| Testing Schedule: | Monday-Friday |
| Turn Around Time: | STAT: NA |
| | Routine: 48-72 hours |
| Collection Information: | No special patient preparation is required. Obtain by standard collection procedures. |
| Transport Information: | Deliver to lab immediately. All specimens must be signed into the laboratory. |
| Reference Client: | If unable to deliver to the lab within 1 hour, centrifuge the specimen and remove serum from the red cells. Store and transport at 2-8° C. Specimen must be received in the lab within 48 hours. Do not freeze sample. |
| Causes for Rejection: | Improperly labeled, incorrect container, contaminated, insufficient volume, incorrect/delay in transport. |
| Reference Range: | 14 - 40 mg/dL |
| Additional Information: | |