| Procalcitonin | 14.5 | 29332972 |
| Procathepsin L | 37.564 | UniProtKB |
| Procollagen-3 | 42 | Found via general search |
| Progastrin‐releasing peptide (ProGRP) | 14 | Found via general search |
| Programmed cell death 1 ligand 1 | 33.275 | UniProtKB |
| Programmed cell death 1 ligand 2 | 30.957 | UniProtKB |
| Progranulin | 63.544 | UniProtKB |
| Prolactin (PRL) | 23 | Found via general search |
| proMMP9/NGAL complex | 125 | Found via general search |
| Properdin(Factor P) | 53 | Found via general search |
