Valproic Acid (Depakene) Vasopressin (ADH) VDRL (RPR) Vitamin B12 Vitamin D2 Vitamin E VMA (HPLC) VTEC E. Coli 0157 Verotoxin VTEC Verotoxin VZV IgG (IFA) VZV IgM (IFA) Weil-Felix Proteus (Rickettsia rickettsii) Widal Salmonella strains Wright Brucella Strains Yersinia enterocolitica IgG Yersinia enterocolitica IgM Zinc 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19