laboratory diagnostic - PT EQA samples - infectious serology - Serology Сontrol, Positive, Level 1, liquid ready to use, 5ml, vial, unlabeled, 6 analytes: Anti-HBc, Anti-HCV, Anti-HIV 1 / 2, Anti-HTLV 1 / 2, HBsAg, Treponema pallidum (Syphilis) IgG, code L35EQ1016, todylaboratories®