| NAACD | N-Acetylaspartic Acid, Canavan Disease, Random, Urine Mayo Clinic Laboratories in Rochester | 
      
        | NAT2Q | N-Acetyltransferase 2 (NAT2) Genotype, Varies Mayo Clinic Laboratories in Rochester | 
      
        | NMH24 | N-Methylhistamine, 24 Hour, Urine Mayo Clinic Laboratories in Rochester | 
      
        | NMH1D | N-Methylhistamine, 24 Hour, Urine Mayo Clinic Laboratories in Rochester | 
      
        | NMHR1 | N-Methylhistamine, Random, Urine Mayo Clinic Laboratories in Rochester | 
      
        | NMHR | N-Methylhistamine, Random, Urine Mayo Clinic Laboratories in Rochester | 
      
        | FINA | NAbFeron (IFNB-1) Neutralizing Antibody Test Athena Diagnostics | 
      
        | FNAD | Nadolol, Serum/Plasma NMS Labs | 
      
        | FNALO | Naloxone - Total (Conjugated/Unconjugated), Screen, Urine NMS Labs | 
      
        | NAPSN | Napsin A Immunostain, Technical Component Only Mayo Clinic Laboratories in Rochester | 
      
        | NARC | Narcolepsy-Associated Antigen, HLA-DQB1 Typing, Blood Mayo Clinic Laboratories in Rochester | 
      
        | QNKS | Natural Killer (NK)/Natural Killer T-Cell Subsets, Quantitative, Blood Mayo Clinic Laboratories in Rochester | 
      
        | NMS1 | Necrotizing Myopathy Evaluation, Serum Mayo Clinic Laboratories in Rochester | 
      
        | FNECT | Nectarine (Prunus spp) IgE Eurofins Viracor | 
      
        | NECT4 | Nectin-4, Semi-Quantitative Immunohistochemistry, Manual Mayo Clinic Laboratories in Rochester | 
      
        | NEGCT | Negative Control, Technical Component Only Mayo Clinic Laboratories in Rochester | 
      
        | MGRNA | Neisseria gonorrhoeae, Miscellaneous Sites, Nucleic Acid Amplification, Varies Mayo Clinic Laboratories in Rochester | 
      
        | GCRNA | Neisseria gonorrhoeae, Nucleic Acid Amplification, Varies Mayo Clinic Laboratories in Rochester | 
      
        | SCGCV | Neisseria gonorrhoeae, Self-Collect, Amplified RNA, Vaginal Mayo Clinic Laboratories in Rochester | 
      
        | SCGCR | Neisseria gonorrhoeae, Self-Collect, Nucleic Acid Amplification, Rectal Mayo Clinic Laboratories in Rochester | 
      
        | SCGCT | Neisseria gonorrhoeae, Self-Collect, Nucleic Acid Amplification, Throat Mayo Clinic Laboratories in Rochester | 
      
        | FNMEN | Neisseria Meningitidis IgG Vaccine Response Quest Diagnostics | 
      
        | FNNAT | Neonatal Alloimmune Thrombocytopenia (NAIT)-Serial Monitoring Maternal only Versiti Wisconsin, Inc. | 
      
        | NBILI | Neonatal Bilirubin, Serum Mayo Clinic Laboratories in Rochester | 
      
        | FNEOS | Neopterin LabCorp Burlington |