LE Test (Anti dsDNA IFA) LFTs (Liver Function Tests) LH Lutenising Hormone Listeria (IFA) Lithium Lithium LKM Liver Kidney Microsomal Lupus Anticoagulant Lyme Disease IgG (Borrelia) Lyme Disease IgM (Borrelia ) Macroprolactinaemia Malaria IgG (IFA) Malaria IgM (IFA) Mantoux Measles IgM (IFA) Measles (Rubeola) IgG (IFA) Mercury Metanephrines Microalbumin Microalbumin/Creatinine Ratio Microglobulin (β2) MPO Cyanide (Cytochemistry) Mullerian Hormone (Anti) Mumps IgM (IFA) Mumps (Parotitis) IgG (IFA) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19