Infectious Diseases Syphilis Cassette (Whole Blood/Serum/Plasma) Article 424111000 Item Added To Cart. Matching products HIV 1/2 Cassette (Whole Blood/Serum/Plasma) Malaria p.f./pan Cassette (Whole Blood) Syphilis/HIV Combo Cassette (WB/Serum/Plasma) HBsAg Cassette (Whole Blood/Serum/Plasma) V.cholerae O1/O139 Antigen Combo Cassette (Feces)