Human GM-CSF ELISA Kit PicoKine (96 Tests). Quantitate Human CSF2 in cell culture supernatants, serum and plasma (heparin, EDTA, citrate). Sensitivity: 0.1pg/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.