Rat TSH ELISA Kit is a competitive ELISA kit for use with Serum, plasma and other biological fluids. This assay has high sensitivity and excellent specificity for detection of Thyroid Stimulating Hormone (TSH). No significant cross-reactivity or interference between Thyroid Stimulating Hormone (TSH) and analogues was observed. Please note that this kit is also available as a CLIA Kit. Quantitative Colorimetric Competitive ELISA. Sample Types: serum, plasma and other biological fluids. Range: 185.2 pg/ml - 15000 pg/ml. Sensitivity: < 74.5 pg/ml