Rat Glutamine synthetase ELISA Kit is a sandwich ELISA kit for use with Serum, plasma, tissue homogenates, cell lysates and other biological fluids. This assay has high sensitivity and excellent specificity for detection of Glutamine synthetase (GS). No significant cross-reactivity or interference between Glutamine synthetase (GS) and analogues was observed. Please note that this kit is also available as a CLIA Kit. Quantitative Colorimetric Sandwich ELISA. Sample Types: serum, plasma, tissue homogenates, cell lysates and other biological fluids. Range: 15.62 pg/ml - 1000 pg/ml. Sensitivity: < 6.2 pg/ml