NDLI: Direct time-resolved fluorescence immunoassay of progesterone in serum involving the biotin-streptavidin system and the immobilized-antibody approach.

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Direct time-resolved fluorescence immunoassay of progesterone in serum involving the biotin-streptavidin system and the immobilized-antibody approach.

Content Provider	Semantic Scholar
Author	Kakabakos, Sotiris E. Khosravi, Mohammad Javad
Copyright Year	1992
Abstract	We developed a direct competitive-type immunoassay for progesterone in serum that combines the advantages of the biotin-streptavidin system with the antibody-immunobilization approach. We synthesized biotinylated progesterone derivatives of five different proteins and, after initial evaluation of the conjugates, selected biotinylated bovine IgG-progesterone as the most suitable tracer. Progesterone released from binding proteins with danazol competes with the biotinylated tracer conjugate for binding to a limited amount of a mouse anti-progesterone monoclonal antibody in microtitration wells coated with a goat anti-mouse IgG antibody. The binding of the biotinylated tracer is then monitored by reaction with a streptavidin-based universal detection reagent developed for time-resolved fluorometry. The assay demonstrated typical performance characteristics with respect to the dynamic range, detection limit, and precision. Recovery averaged 99.3% (SD 8.3%) and dilution experiments showed good linearity. Measurements correlated well with those from three commercially available direct immunoassays for progesterone.
File Format	PDF HTM / HTML
DOI	10.1093/clinchem/38.5.725
PubMed reference number	1582026
Journal	Medline
Volume Number	38
Issue Number	5
Alternate Webpage(s)	http://clinchem.aaccjnls.org/content/clinchem/38/5/725.full.pdf
Alternate Webpage(s)	https://doi.org/10.1093/clinchem%2F38.5.725
Journal	Clinical chemistry
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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