| MSMN | Membranous Nephropathy Target Antigen Identification, Mass Spectrometry, Tissue Mayo Clinic Laboratories in Rochester | 
      
        | MEP | Meningitis Encephalitis Panel, CSF Huntsville Hospital Laboratory | 
      
        | HGOU | Mercury Occupational Exposure, Random, Urine Mayo Clinic Laboratories in Rochester | 
      
        | HGUOE | Mercury Occupational Exposure, Random, Urine Mayo Clinic Laboratories in Rochester | 
      
        | HGU | Mercury, 24 Hour, Urine Mayo Clinic Laboratories in Rochester | 
      
        | HG | Mercury, Blood Mayo Clinic Laboratories in Rochester | 
      
        | HGCU | Mercury/Creatinine Ratio, Random, Urine Mayo Clinic Laboratories in Rochester | 
      
        | HGUCR | Mercury/Creatinine Ratio, Random, Urine Mayo Clinic Laboratories in Rochester | 
      
        | MERKC | Merkel CC (MCPyV) Immunostain, Technical Component Only Mayo Clinic Laboratories in Rochester | 
      
        | NF2 | Merlin (NF2) Immunostain, Technical Component Only Mayo Clinic Laboratories in Rochester | 
      
        | HBME | Mesothelial Cell (HBME-1) Immunostain, Technical Component Only Mayo Clinic Laboratories in Rochester | 
      
        | MESQ | Mesquite, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | METF | MET (7q31), FISH, Tissue Mayo Clinic Laboratories in Rochester | 
      
        | METSP | MET (SP44), Semi-Quantitative Immunohistochemistry, Manual Mayo Clinic Laboratories in Rochester | 
      
        | MT | Metallothionein Immunostain, Technical Component Only Mayo Clinic Laboratories in Rochester | 
      
        | MHBRP | Metamycoplasma hominis, Molecular Detection, PCR, Blood Mayo Clinic Laboratories in Rochester | 
      
        | MHPRP | Metamycoplasma hominis, Molecular Detection, PCR, Plasma Mayo Clinic Laboratories in Rochester | 
      
        | MHRP | Metamycoplasma hominis, Molecular Detection, PCR, Varies Mayo Clinic Laboratories in Rochester | 
      
        | META3 | Metanephrines with 3-Methoxytyramine, 24 Hour, Urine Mayo Clinic Laboratories in Rochester | 
      
        | METAF | Metanephrines, Fractionated, 24 Hour, Urine Mayo Clinic Laboratories in Rochester | 
      
        | PMET | Metanephrines, Fractionated, Free, Plasma Mayo Clinic Laboratories in Rochester | 
      
        | METRN | Metanephrines, Fractionated, Random, Urine Mayo Clinic Laboratories in Rochester | 
      
        | MDNS | Methadone and Metabolites, Serum Mayo Clinic Laboratories in Rochester | 
      
        | MTDNU | Methadone Confirmation, Random, Urine Mayo Clinic Laboratories in Rochester | 
      
        | MET | Methemoglobin and Sulfhemoglobin, Blood Mayo Clinic Laboratories in Rochester |