| OCT | object classification test; optimal cutting temperature; oral contraceptive therapy; ornithine carba... |
|---|---|
| OES | oral esophageal stethoscope; optical emission spectroscopy |
| OGTT | oral glucose tolerance test |
| OHA | oral hypoglycemic agents |
| OHI-S | Oral Hygiene Instruction-Simplified |
| OFDS | Oral-Facial-Digital syndromes |
|---|---|
| ROU | Recurrent oral ulcer |
| TOPV | Trivalent oral poliovaccine |
| PO | per oral |