| Carcinoembryonic antigen (CEA) | 180 | Found via general search |
| Carboxypeptidase N catalytic chain | 52.286 | UniProtKB |
| Carbamide | 0.060056 | Found via general search |
| Calcitonin | 15.467 | UniProtKB |
| Cadherin-1 | 97.456 | UniProtKB |
| CA19-9 (cancer antigen 19-9) | 210 | Found via general search |
| CA15-3 (cancer antigen 15-3) | 400 | Found via general search |
| CA12-5 (cancer antigen 12-5) | 200 | Found via general search |
| CA125 (cancer antigen 125) | 600 | Found via general search |
| CA 72-4 (cancer antigen 72-4) | 600 | Found via general search |
