laboratory diagnostic - PT EQA samples - tumor markers - Tumor Marker Control, Level 1, liquid stable, 2ml, vial, unlabeled, 11 analytes: AFP, CEA, CA-125, CA-19.9, CA-15-3, Ferritin, ß2-Microglobulin, FPSA, PSA, FßhCG, Thyroglobulin, code L23EQ1085-TLI (L23EQ1001), todylaboratories®