| Programmed cell death 1 ligand 2 | 30.957 | UniProtKB | 
| Programmed cell death 1 ligand 1 | 33.275 | UniProtKB | 
| Progastrināreleasing peptide (ProGRP) | 14 | Found via general search | 
| Procollagen-3 | 42 | Found via general search | 
| Procalcitonin | 14.5 | 29332972 | 
| pro-BNP (pro-B-type natriuretic peptide) | 8.5 | Found via general search | 
| Presepsin | 13 | Found via general search | 
| Prealbumin | 54.98 | Found via general search | 
| Poliovirus receptor | 45.303 | UniProtKB | 
| PlGF-1 (Placental growth Factor 1) | 29.7 | Found via general search |