| Sodium |
| Neutrophils |
| Nucleated RBC |
| . Nitrite |
| NMO Ab(IgG) |
| NBT |
| PCR for Neisseria gonorrhoeae |
| PCR for Neisseria menangitidis |
| Noradrenalin |
| Urine norepinephrine 24 hrs. |
| Urine Normetanephrine 24 hrs. |
| NSE |
| NMP22 |
| Nasal dis .D.S |
| Nasal dis .(C&S) |
| Na (stool)-Random |
| . Neutrophil |
| Normal Morphology |
| Nortriptyline |
| NARCOTIC DRUGS: |
| Urine norepinephrine (Random) |
| Anti Neuronal(Paraneoplastic) |
| Anti Neuronal Ab(autoimmne encephalitis) |
| NGAL-Blood |
| Urine NGAL |
| NMO Ab-IgG (CSF) |
| NTX |
| Nitrazepam |
| Nicotine |
| Nitric oxide |
| NAG |
| NPY |
| PCR for Non TB |
| Najafi |
| NT Pro BNP |
| Neutrophil / Lymphocyte Ratio |
| NPM-1 exon 12 |
| NRAS |