| Abbreviation | Definition |
|---|---|
| NDTL | National Dope Testing Laboratory |
| NEC | Non-Esterified Cholesterol |
| NED | NeuroEndocrine Differentiation |
| NED | NIH (National Institutes of Health) Enterprise Directory |
| NEL | National Engineering Laboratory |
| NEL | National Exploitation Laboratory |
| NELC | Naval Electronics Laboratory Center |
| NETL | National Energy Technology Laboratory |
| NETT | National Emphysema Treatment Trial |
| NFAI | Nerve Fiber Analyzer I |
| NFLR | NASA Federal Laboratory Review |
| NFTL | National Food Testing Laboratory |
| NGM | Nematode Growth Media |
| NGM | NorGestiMate |
| NGO | Non-Government Organization |
| NGSP | National Glycohemoglobin Standardization Program |
| NGZ | Negative Grey Zone |
| NHC | Nutrient Holding Capacity |
| NHD | NeuroHormone D |
| NHL | Non Hodgkins Lymphoma |