| Test Name (Click to sort by popular result) | COE Code |
| N-Methyl Histamine, Urine | ML MISC |
| NMR LipoProfile | NMR220 |
| NOGGIN Gene Sequencing | NOGSS |
| NPM1 Mutation Detection | MLABEL |
| NTx-Telopeptide, Serum | ML MISC |
| NTx-Telopeptide, Urine | ML MISC |
| Naproxen | ML MISC |
| Navane | THIOX |
| Neisseria GC Screen | NSSN |
| Neisseria gonorrhoeae DNA by PCR, Urine | GCUR |
| Neisseria gonorrhoeae DNA by PCR, Urogenital | PCRGC |
| Nerve Biopsy | |
| Neurofibromatosis Type 1 (NF1) Mutation Analysis | SENDOUT |
| Neuromyelitis Optica (NMO) Antibody, IgG | ML MISC |
| Neuron Specific Enolase | NSES |
| Neutrophil Antibody Assay | ML MISC |
| Neutrophil Cytoplasmic Antibody | NCAB |
| Neutrophil Oxidative Burst Assay | ML MISC |
| Newborn Screening | NBS |
| Nickel, Serum/Urine | NI-S/NI-U |
| Nicotine and Metabolites, Serum | NICOS |
| Noonan Syndrome Tiered Testing | NSSTS |
| Nortriptyline | NORT |
| Norwalk-Like Virus (NLV) | ML MISC |
| Nuclear Medicine Testing |