| NHK | normal human kidney |
|---|---|
| NHP | nonhemoglobin protein; nonhistone protein; normal human pooled plasma; Nottingham Health Profile; nu... |
| NIRS | near-infrared spectroscopy; normal inactivated rabbit serum |
| NKHS | nonketotic hyperosmolar syndrome; normal Krebs-Henseleit solution |
| nl | nanoliter; normal [value] |