Description_x000D_ Packaging_x000D_ 10, 100 mg in poly bottle_x000D_ Biochem/physiol Actions_x000D_ 11β-Hydroxy-4-androstene-3,17-dione is a naturally occurring steroid that is primarily, if not strictly, produced in adrenal tissue. In diseases such as Cushing′s syndrome, adrenal-originated hyperandrogenism, and congenital adrenal hyperplasia, plasma 11β levels are very high. Plasma 11β concentration is very low in congenital 11-hydroxylase deficiency and adrenal insufficiency._x000D_ Other Notes_x000D_ Tandem Mass Spectrometry data independently generated by Scripps Center for Metabolomics is available to view or download in PDF. A3009.pdf Tested metabolites are featured on Scripps Center for Metabolomics METLIN Metabolite Database. To learn more, visit sigma.com/metlin.