This Glutathione S-Transferase (GST) Alpha ELISA kit is a standard sandwich enzyme-linked immunosorbent assay (ELISA). The plate is pre-coated with anti-GSTA and blocked, ready for the addition of samples and standards. The assay should take approximately 3 hours to run, plus any required sample preparation time. Species Reactivity: human, rat. Sample Types: serum. Range: 0.1 - 10 ng/mL. Sensitivity: 0.1 mg/mL. Time: 2 hours ? Glutathione S-Transferase (GST) has multiple isoforms. This assay is specific for Glutathione S-Transferase Alpha (GSTA) and is not known to cross react with the mu, pi, or theta variants. GSTA is a common biomarker for hepatocellular damage. It also conjugates GSH to 4-hydroxynonenal, a product of lipid peroxidation and is an important player in cellular antioxidant defense mechanisms.