| NLDL | normal low-density lipoprotein |
|---|---|
| OD | Doctor of Optometry; obtained absorbance; occipital dysplasia; occupational dermatitis; occupational... |
| ODU | optical density unit |
| PSAD | prostate-specific antigen density |
| PT | pain threshold; parathormone; parathyroid; paroxysmal tachycardia; part time; patient; pericardial t... |