| MUMPCR | MUMPS PCR Vermont Department of Health Laboratory | 
      
        |  | Mumps Virus Antibody, IgM, Serum Mayo Clinic Laboratories in Rochester | 
      
        | PA-MUSCLE | MUSCLE BIOPSY University of Vermont Medical Center | 
      
        | LAB17261 | MUSCLE RELAXANT CONFIRMATION PANEL, URINE Champlain Toxicology Laboratory | 
      
        |  | Muscle-Specific Kinase (MuSK) Autoantibody, Serum Mayo Clinic Laboratories in Rochester | 
      
        |  | Mushroom, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        |  | Mustard, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        |  | Myasthenia Gravis Evaluation with Muscle-Specific Kinase (MuSK) Reflex, Serum Mayo Clinic Laboratories in Rochester | 
      
        |  | Myasthenia Gravis/Lambert-Eaton Myasthenic Syndrome Evaluation, Serum Mayo Clinic Laboratories in Rochester | 
      
        |  | Mycobacterial Culture, Blood Mayo Clinic Laboratories in Rochester | 
      
        |  | Mycobacterium tuberculosis Complex, Molecular Detection, PCR, Varies Mayo Clinic Laboratories in Rochester | 
      
        | SPUTBB | MYCOBACTERIUM TUBERCULOSIS, PCR University of Vermont Medical Center | 
      
        |  | Mycophenolic Acid, Serum Mayo Clinic Laboratories in Rochester | 
      
        |  | Mycoplasma genitalium, Transcription-Mediated Amplification, Urine or Urogenital Swab Mayo Clinic Laboratories in Rochester | 
      
        |  | Mycoplasma pneumoniae Antibodies, IgG and IgM, Serum Mayo Clinic Laboratories in Rochester | 
      
        |  | Myelin Oligodendrocyte Glycoprotein (MOG-IgG1) Fluorescence-Activated Cell Sorting (FACS) Assay, Serum Mayo Clinic Laboratories in Rochester | 
      
        |  | Myelin-Associated Glycoprotein Autoantibodies, IgM, Serum Mayo Clinic Laboratories in Rochester | 
      
        | LAB17645 | MYELOPEROXIDASE (MPO) AND PROTEINASE 3 (PR3) ANTIBODIES VASCULITIS PANEL University of Vermont Medical Center | 
      
        | LAB17602 | MYELOPEROXIDASE (MPO) ANTIBODY, IGG University of Vermont Medical Center | 
      
        |  | Myeloproliferative Neoplasm, JAK2 V617F with Reflex to CALR and MPL, Varies Mayo Clinic Laboratories in Rochester | 
      
        |  | Myoglobin, Random, Urine Mayo Clinic Laboratories in Rochester | 
      
        |  | Myoglobin, Serum Mayo Clinic Laboratories in Rochester | 
      
        |  | MyoMarker 3 Plus Profile Esoterix Endocrinology |