| Protein S100-A9 | 13.242 | UniProtKB |
| Protein total | 66.5 | Found via general search |
| Protein-arginine deiminase type-4 | 74.079 | UniProtKB |
| Proteinase 3 | 27.807 | UniProtKB |
| Protein-glutamine gamma-glutamyltransferase 2 | 77.329 | UniProtKB |
| Prothrombin Fragment 1/2 | 42 | Found via general search |
| Protoheme | 0.6165 | UniProtKB |
| Protoporphyrin IX | 0.5627 | UniProtKB |
| P-tau (phosphorylated tau) | 79 | Found via general search |
| PUFA (Polyunsaturated Fatty Acids) | 0.3 | Found via general search |
