Cat#:EIA-396C;Product Name:Human TSH ELISA Kit;Size:96 T;Sample:serum;Intended use:RUO;Synonym:Thyrotropin alfa; Thyrotropin alpha chain; Thyrotropin beta subunit; Thyrotropin subunit beta; TSH A; TSH alpha; TSH B; TSH beta; TSHA; TSHB; GPHa; GPHA1; HCG; LHA; LSH alpha; CG ALPHA; CGA; CGA protein;Background:The determination of serum or plasma levels of thyroid-stimulating hormone (TSH, or thyrotropin) is recognized as a sensitive method in the diagnosis of primary and secondary hypothyroidism. Thyroid-stimulating hormone is secreted by the anterior lobe of the pituitary gland and induces the production and release of thyroxine and triiodothyronine from the thyroid gland. It is glycoprotein with a molecular weight of approximately 28,000 Daltons, consisting of two chemically different subunits, alpha and beta. Although the concentration of TSH in the blood is extremely low, it is essential for the maintenance of normal thyroid function. The release of TSH is regulated by a TSH-releasing hormone (TRH) produced by the hypothalamus. The levels of TSH and TRH are inversely related to the level of thyroid hormone. When there is a high level of thyroid hormone in the blood, less TRH is released by the hypothalamus, so the pituitary secretes less TSH. The opposite action will occur when there is decreased thyroid hormone in the blood. This process is known as a negative feedback mechanism and is responsible for maintaining the proper blood levels of these hormones. TSH and the pituitary glycoproteins: luteinizing hormone (LH), follicle-stimulating hormone (FSH), and human chorionic gonadotropin (hCG) have identical alpha chains. The beta chain is distinct but does contain identical amino acid sequences, which can cause considerable cross-reactivity with some polyclonal TSH antisera.;Species Reactivity:Human;Application:quantitative;Storage:Unopened Kit: Store at 2 - 8°C. Do not use past kit expiration date. Opened/Reconstituted Reagents: TMB Solution A; TMB Solution B; TMB Stop Solution; Wash Buffer; HRP-conjugate antibody The above mentioned reagents should be stored for up to 1 month at 2 - 8°C. Microplate Wells: Return unused wells to the foil pouch containing the desiccant pack, reseal along entire edge of zip-seal. May be stored for up to 1 month at 2 - 8°C.;Usage:For Lab Research Use Only;Detection Principle:Sandwich-ELISA;