5α-Dihydrotestosterone ELISA

For the direct quantitative determination of Dihydrotestosterone by enzyme immunoassay in human serum. For in vitro diagnostic use only. In the United States, this kit is intended for Research Use Only.

Regulatery Status: RUO
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Product Catalog No: EIA-2330 Pack Size: 96 Wells

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Test Principle

The principle of the following enzyme immunoassay test follows the typical competitive binding scenario. Competition occurs between an unlabeled antigen (present in standards, control and patient samples) and an enzyme-labelled antigen (conjugate) for a limited number of antibody binding sites on the microwell plate. The washing and decanting procedures remove unbound materials. After the washing step, the enzyme substrate is added. The enzymatic reaction is terminated by addition of the stopping solution. The absorbance is measured on a microtiter plate reader. The intensity of the colour formed is inversely proportional to the concentration of DHT in the sample. A set of standards is used to plot a standard curve from which the amount of DHT in patient samples and controls can be directly read.

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References
  • Bassett, R.M., A simple chromatographic method for the radioimmunoassay of four androgenic steroids. Medical Laboratory Sciences, 37:31, 1980.
  • Baxendale, P.M., et al., Plasma and salivary androstenedione and dihydrotestosterone in women with hyperandrogenism. Clinical Endocrinology, 18:447, 1983.
  • Brooks, R.V., Androgens. Physiology and PathologyIn:Makin, H.L. J., ed.,Biochemistry of Steroid Hormones, 2nd ed., Oxford Blackwell Scientific Publications, 565:1984.
  • Cameron, E.H.D., In proceedings of the fifth tenovous workshop, Steroid Immunoassay, ed., Cameron, E.H.D., etal., Alpha Omega Publishing Cordiff, 1975.
  • Dunn, J.F., et al, Transport of Steroid Hormones: Binding of 21 endogenous steroids to both SHBG and CBG in human plasma. J. Clin. Endocr. Metab. 53:58, 1981.
  • Hammond, G.L., et al, The simultaneous radioimmunoassay of seven steroids in human spermatic and peripheral venous blood. J. Clin. Endocr. Metab. 45:16, 1977.
  • Ito, T., et al, Dihydrotestosterone in human peripheral plasma. J. Clin. Endocr. 31:362, 1970.
  • Mean, F., et al, Study of the binding of dihydrotestosterone, testosterone and oestradiol with sex hormone binding globulin. Clinica Cemica Alta 80:171, 1977.
  • Mooradian, A.D., et al, The biological actions of androgens. Endocr. Rev. 8:1-28, 1987.
  • Pazzagli, M., et al, Radioimmunoassay of plasma dihydrotestosterone in normal and hypogonadal men. Clin. Endocr. 82:380, 1976.
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