| Synonyms:
| Complement C3, serum |
| Specimen: | Blood; (1) SST (serum separator) or Red (no preservative) top vacutainer tube. Patient should be fasting. |
| Volume: | Full primary tube |
| Minimum Volume: | 300 microL serum |
| Collection: | If not tested immediately, transfer serum to a tightly capped plastic aliquot tube.
Freeze at -20°C for up to 3 months. |
| Rejection Criteria: | Specimens received not frozen; improper labeling. |
| Reference Range: | 85-180 mg/dL |
| Methodology: | Nephelometry |
| Test Use: | C3 is a component of the complement system. Indications for quantifying C3 include severe, recurrent bacterial infections, suspected autoimmune renal disease; monitoring progression or clinical activity of acute glomerulonephritis; SLE; assessment of sub |
| Additional Information: | In specimens that have not been frozen, the C3 value will increase abnormally due to degradation of C3 to C3c. |
| Testing Includes: | Complement C3. |
| Testing Facility: | AnMed Laboratory |