also known as Complement C3 in Serum or Plasma
| # | Retailer | Lab | Seen | Price | |
|---|---|---|---|---|---|
| 1 | Walk-In Labcheapest via LabCorp,Quest · seen today | LabCorp,Quest | today | $49 | order → |
| 2 | Instalab via Multi-lab (4) · seen today | Multi-lab (4) | today | $49 | order → |
| 3 | Jason Health via Quest · seen today | Quest | today | $50 | order → |
| 4 |
| Fibrinogen Antigen | 6 retailers | $70 |
| CRP | 6 retailers | $5 |
| Complement C4 | 5 retailers | $44 |
| C-Reactive Protein, (CRP) Quantitative | 4 retailers | $39 |
| Interleukin-1 Beta | 4 retailers | $586.95 |
| Sedimentation Rate Blood Test, Westergren | 4 retailers | $3 |
| Inflammation Lab Panel | 3 retailers | $125 |
| Interleukin 6 Test | 3 retailers | $131.95 |
| Life Extension Lab Tests |
| today |
| $65 |
| order → |
| 5 | Personalabs via LabCorp · seen today | LabCorp | today | $129 | order → |
| 6 | True Health Labs seen 1mo ago | — | 1mo ago | $159 | order → |