| Magnesium
                - SerumMagnesium - Red Cell
 Magnesium - Urine
 Malarial Parasites
 Malaria Antibodies IgG
 Malaria Antibodies IgM
 Measles Antibodies IgG
 Measles Antibodies IgM
 Metanephrine
 Microalbumin/Creatinine Ratio
 Microfilaria Screen
 Microglobulin (Beta 2)
 Microsomal Antibodies
 Mitochondrial Antibodies
 Mumps Serology IgG
 Mumps Serology IgM
 Mycoplasma Pneumonia Serology
 Mycobacterium tuberculosis IgG
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