| PTB | Patellar-Tendon-Bearing |
|---|---|
| PTB | Pentobarbital |
| PTB | Phosphotyrosine binding |
| PTB | Polypyrimidine tract binding protein |
| PTB | Pulmonary Tuberculosis |
| PTBBS | Peripheral-type benzodiazepine binding sites |
| PTBD | Percutaneous Transhepatic Biliary Drainage |
| PTBR | Peripheral-type benzodiazepine receptors |