The total estrogens ELISA is a competitive immunoassay. Competition occurs between total estrogens (estrone, estradiol, and estriol) present in calibrators, controls and patient samples and an enzyme-labelled antigen (conjugate) for a limited number of anti-estrogen antibody binding sites on the microplate wells. After a washing step that removes unbound materials, the enzyme substrate is added, and approximately 30 minutes later the enzymatic reaction is terminated by addition of stop solution. The resulting optical density (OD), measured with a microplate reader, is inversely proportional to the concentration of total estrogens in the sample. A calibrator curve is plotted with a provided set of calibrators to directly calculate the concentration of total estrogens in samples and controls.
1. What percentage of your IgE allergy testing panel consists of molecular allergens rather than allergen extracts? The ALEX2 IgE allergen panel consists of 117 extracts and 183 molecular allergens. This represents the largest panel of molecular allergens on the market, including 50 unique...
Cases of food and environmental allergies have been increasing over the last decade. While conservative estimates suggest IgE-mediated allergy affects 6-8% of children and 2-3% of adults, some estimates are as high as 30%.3, 2 Symptoms can range from mild to severe and include itching, hives,...
Food sensitivity or food intolerance involves a non-allergic response to a food or food additive. In a recent on-line survey conducted in the U.S., 24% of adults aged 18 to 79 reported a food intolerance. While a food allergy is typically mediated by IgE antibodies, adverse reactions to food...
Salem, NH, December 19, 2023 – Revvity’s EUROIMMUN business, a leading provider of high-quality in-vitro diagnostic products, and ALPCO-GeneProof, a global leader in molecular diagnostics, jointly announced a strategic partnership to enhance the availability of GeneProof PCR kits throughout the...
ALPCO offers targeted GI solutions suitable for all types of labs. Our offerings range from plate-based to clinical chemistry analyzer-based and automated flash chemiluminescence solutions, all designed to accommodate your lab’s expanding testing needs and capabilities.
In the webinar, Dr. Benjamin Click from the University of Colorado, Department of Gastroenterology, underscores the critical role of non-invasive monitoring methods, particularly fecal calprotectin monitoring, in guiding treatment adjustments and achieving therapeutic goals..
Energy homeostasis is a focus of research into diabetes and obesity. Read about how our assays in this area can assist both academic and industry researchers.
Complement System Solutions for Drug Development and Clinical Research Datasheet
The complement system is essential to innate immunity from a variety of diseases. ALPCO’s full range of complement system immunoassays can drive discovery.
Melatonin Products for Sleep Disorder-Related Research Datasheet
The melatonin hormone affects the circadian rhythm and sleep-wake cycle. Find out about our immunoassays and products that explore melatonin and sleep disorders.
