| NCLW | Neuronal Ceroid Lipofuscinosis, Two-Enzyme Panel, Leukocytes Mayo Clinic Laboratories in Rochester | 
      
        | NEUD1 | Neuronal Differentiation 1 (NeuroD1), Technical Component only Mayo Clinic Laboratories in Rochester | 
      
        | NSAIP | Neurosyphilis IgG Antibody Index with VDRL, Serum and Spinal Fluid Mayo Clinic Laboratories in Rochester | 
      
        | NSAI | Neurosyphilis IgG, Antibody Index, Spinal Fluid Mayo Clinic Laboratories in Rochester | 
      
        | FNEU2 | Neurotensin Inter Science Institute | 
      
        | FNEU | Neurotransmitter Metabolites (5HIAA, HVA, 3OMD) (CSF) Medical Neurogenetics, LLC | 
      
        | FNTSM | Neurotransmitter Profile 3 Medical Neurogenetics, LLC | 
      
        | NADF | Newborn Aneuploidy Detection, FISH, Blood Mayo Clinic Laboratories in Rochester | 
      
        | NIU | Nickel, 24 Hour, Urine Mayo Clinic Laboratories in Rochester | 
      
        | NIS | Nickel, Serum Mayo Clinic Laboratories in Rochester | 
      
        | NIUCR | Nickel/Creatinine Ratio, Random, Urine Mayo Clinic Laboratories in Rochester | 
      
        | NIUC | Nickel/Creatinine Ratio, Random, Urine Mayo Clinic Laboratories in Rochester | 
      
        | NICOU | Nicotine and Metabolites, Random, Urine Mayo Clinic Laboratories in Rochester | 
      
        | NICOS | Nicotine and Metabolites, Serum Mayo Clinic Laboratories in Rochester | 
      
        | NCSRY | Nicotine Survey, Serum Mayo Clinic Laboratories in Rochester | 
      
        | NITU | Nitrogen, Total, 24 Hour, Urine Mayo Clinic Laboratories in Rochester | 
      
        | NITF | Nitrogen, Total, Feces Mayo Clinic Laboratories in Rochester | 
      
        | NKX3 | NKX3.1 Immunostain, Technical Component Only Mayo Clinic Laboratories in Rochester | 
      
        | SSF1 | Nocardia Stain, Varies Mayo Clinic Laboratories in Rochester | 
      
        | NDSPC | Non-Gynecologic Direct Smear (Bill Only) Mayo Clinic Laboratories in Rochester | 
      
        | NTPPC | Non-Gynecologic, ThinPrep (Bill Only) Mayo Clinic Laboratories in Rochester | 
      
        | NSIP | Non-Seasonal Inhalant Allergen Profile, Serum Mayo Clinic Laboratories in Rochester | 
      
        | NSFIB | Nonalcoholic Steatohepatitis (NASH)-FibroTest, Serum and Plasma Mayo Clinic Laboratories in Rochester | 
      
        | NSRGG | Noonan Syndrome and Related Conditions Gene Panel, Varies Mayo Clinic Laboratories in Rochester | 
      
        | LNORO | Norovirus PCR, Molecular Detection, Feces Mayo Clinic Laboratories in Rochester |