| C-Peptide | RIA / Chemiluminescence | diabetes | GCP | Diabetes (1, 2), Liver, Insulinoma |
| Calcium | Colorimetric | bone | GCP | Osteoporosis, Heart, Diabetes |
| Cholesterol | Enzymatic | lipid | GCP | Gallbladder, Metabolic, Heart |
| Cortisol | LC/MS/MS / Chemiluminescence | steroid | GLP / GCP | Addison, Cushing, Aids, Crohn's |