M Antigen Typing – Patient Macroamylase Determination Mannose Binding Lectin MDM2 Gene Amplification by FISH Melatonin Manual Differential Measles (Rubeola) Antibodies, IgG and IgM Meningitis/Encephalitis Panel by PCR Maprotiline Quantitative, Serum or Plasma Measles (Rubeola) Antibody, IgG Meperidine and Metabolite, Serum or Plasma, Quantitative Macroprolactin Marfan Syndrome (FBN1) Deletion/Duplication Measles (Rubeola) Antibody, IgG, CSF Meperidine and Metabolite, Urine, Quantitative Magnesium, Fecal Marfan Syndrome (FBN1) Sequencing and Deletion/Duplication Measles (Rubeola) Antibody, IgM Meperidine, Urine Screen with Reflex to Quantitation Magnesium, Plasma or Serum
