Human IL-6/Interleukin-6 ELISA Kit PicoKine (96 Tests). Quantitate Human IL6 in cell culture supernatants, serum and plasma ( heparin, EDTA, citrate). Sensitivity: 0.108pg/ml. The brand Picokine indicates this is a premium quality ELISA kit. Each Picokine kit delivers precise quantification, high sensitivity, and excellent reproducibility. Only our most reliable and effective kits qualify as Picokine, guaranteeing top-tier results for your assays.