| 91398 | N-Telopeptide, SerumTX, Serum |
| 93684 | N-telopeptide, Urine |
| 2620 | N-terminal prohormone brain natriuretic peptide |
| 1026 | NA, Serum |
| 1104 | NA, Urine Quant |
| 91420 | NAPA |
| 3745 | Nasal Smear |
| 93680 | Natural Killer Cells |
| 2118 | Nebcin, Peak |
| 2122 | Nebcin, Trough |
| 91403 | Neisseria gonorrhea Antibody |
| 1130 | Neisseria gonorrhoeae, Aptima |
| 4022 | Neisseria gonorrhoeae, Culture |
| 80267 | Nettle [IgE] |
| 93549 | Neuronal Nuclear Antibody (ANNA) IgG w/Reflex Titer |
| 91107 | Neurontin |
| 91477 | Niacin |
| 93681 | Nicotine |
| 91610 | NMR, Lipoprofile |
| 91595 | No |
| 5230 | Non-GYN Cytology |
| 91077 | Nordiazepam |
| 91081 | Nordoxepin |
| 91076 | Norimpramine |
| 91341 | Normethsuximide |
| 94013 | Norovirus Antigen |
| 80823 | Northwest Inhalant Panel |
| 80826 | Northwest Region 9 |
| 80807 | Northwest Region II Allergy |
| 80825 | Northwest Region Pollen Panel |
| 91172 | Nortriptyline |
| 91018 | Nortriptyline + Elavil |
| 94013 | Norwalk Virus Antigen |
| 91398 | NTX, Serum |
| 91006 | Nucleotidase |
| 91192 | Nucleotide 20210G |
| 80823 | NW Inhalant Panel |
| 80826 | NW Region 9 |
| 80806 | NW Region Panel I |
| 80807 | NW Region Panel II |
| 80825 | NW Region Pollen Panel |