title: Development of an indirect enzyme immunoassay using monoclonal antibodies for the measurement of 17alpha-hydroxyprogesterone in human serum.
abstract: An indirect enzyme immunoassay for the measurement of total 17alpha-hydroxyprogesterone (17OHP) in serum using monoclonal antibodies generated in our laboratory was developed. Here, (a) instead of extraction with solvents, serum was heated to free protein-bound 17OHP and assay was performed at pH 9.6, (b) to ensure uniform assay conditions for both standards and samples, buffer for standards contained charcoal-stripped pre-heated pooled cord serum. Assays were done in 96-well EIA microplates pre-coated with 17alpha-hydroxyprogesterone-3-(o-carboxymethyl)oxime: bovine serum albumin. Secondary antibody was horseradish peroxidase-linked sheep anti-mouse IgG polyclonal antibody. The method was accurate and suitable for screening for congenital adrenal hyperplasia.
authors.affiliation: Monoclonal Laboratory, Department of Physiology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia.
authors.forename: Heilly
authors.initials: H
authors.lastname: Chong
authors.forename: Swee Hung
authors.initials: SH
authors.lastname: Cheah
authors.forename: M
authors.initials: M
authors.lastname: Ragavan
authors.forename: V T
authors.initials: VT
authors.lastname: Johgalingam