Milk progesterone radioimmunoassay using radioiodinated tracers: a rapid and reliable assay system
Journal Article
·
· Steroids; (United States)
Both the validity and practicability of a direct progesterone radioimmunoassay based on radioiodinated progesterone tracers were studied. The results obtained show the reliability of the assay; when compared with assays based on /sup 3/H-progesterone tracers there are fewer steps for assay execution, saving time and reducing the number of reagents used. Various commercially available /sup 125/I-progesterone tracers were assayed, and only those with an 11 alpha-hemisuccinate bridge were suitably bound by antisera raised against progesterone-bovine serum albumin conjugates having identical bridge structure. The bridge effect caused no observable alteration in validity parameters. Finally, the results support the utility of this assay as a practical method of early diagnosis of pregnancy and as a reliable experimental technique to monitor cow ovarian function.
- Research Organization:
- Univ. of Santiago, Santiago de Compostela, Spain
- OSTI ID:
- 5023224
- Journal Information:
- Steroids; (United States), Journal Name: Steroids; (United States) Vol. 3; ISSN STEDA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
550201* -- Biochemistry-- Tracer Techniques
59 BASIC BIOLOGICAL SCIENCES
ALBUMINS
ANIMALS
BETA DECAY RADIOISOTOPES
BIOLOGICAL MATERIALS
BODY
BODY FLUIDS
CATTLE
DAYS LIVING RADIOISOTOPES
DIAGNOSIS
DOMESTIC ANIMALS
ELECTRON CAPTURE RADIOISOTOPES
FEMALE GENITALS
FOOD
GONADS
HORMONES
INTERMEDIATE MASS NUCLEI
IODINE 125
IODINE ISOTOPES
ISOTOPE APPLICATIONS
ISOTOPES
KETONES
LABELLED COMPOUNDS
MAMMALS
MATERIALS
MILK
NUCLEI
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
ORGANS
OVARIES
PREGNANCY
PREGNANES
PROGESTERONE
PROTEINS
RADIOASSAY
RADIOIMMUNOASSAY
RADIOISOTOPES
RELIABILITY
RUMINANTS
STEROID HORMONES
STEROIDS
TRACER TECHNIQUES
VERTEBRATES
59 BASIC BIOLOGICAL SCIENCES
ALBUMINS
ANIMALS
BETA DECAY RADIOISOTOPES
BIOLOGICAL MATERIALS
BODY
BODY FLUIDS
CATTLE
DAYS LIVING RADIOISOTOPES
DIAGNOSIS
DOMESTIC ANIMALS
ELECTRON CAPTURE RADIOISOTOPES
FEMALE GENITALS
FOOD
GONADS
HORMONES
INTERMEDIATE MASS NUCLEI
IODINE 125
IODINE ISOTOPES
ISOTOPE APPLICATIONS
ISOTOPES
KETONES
LABELLED COMPOUNDS
MAMMALS
MATERIALS
MILK
NUCLEI
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
ORGANS
OVARIES
PREGNANCY
PREGNANES
PROGESTERONE
PROTEINS
RADIOASSAY
RADIOIMMUNOASSAY
RADIOISOTOPES
RELIABILITY
RUMINANTS
STEROID HORMONES
STEROIDS
TRACER TECHNIQUES
VERTEBRATES