| P-P | prothrombin proconvertin |
|---|---|
| PPCA | plasma prothrombin conversion accelerator; proserum prothrombin conversion accelerator |
| PCT | peripheral carcinoid tumor; plasma clotting time; plasmacrit test; plasmacytoma; polychlorinated tri... |
| PAT | Pain Apperception Test; paroxysmal atrial tachycardia; patient; phenylaminotetrazole; physical abili... |
| CAT | California Achievement Test; capillary agglutination test; catalase; cataract; catecholamine; Childr... |