| NCAMLP | National Certification Agency for Medical Laboratory Personnel |
|---|---|
| NPA | National Pharmaceutical Association; National Pituitary Agency; near point accommodation; Nurse Prac... |
| NPA-NIHHDP | National Pituitary Agency-National Institutes of Health Hormone Distribution Program |
| OPA | open procurement agency |
| PHA | passive hemagglutination [test]; peripheral hyperalimentation; phenylalanine; phytohemagglutinin; ph... |