The Free Estriol ELISA is an enzyme immunoassay for the quantitative in vitro diagnostic measurement of free estriol (unconjugated estriol) in serum during the second half of pregnancy. FDA Registered. For In Vitro Diagnostic Use.
The Free Estriol ELISA kit is a solid-phase enzyme-linked immunosorbent assay (ELISA), based on the principle of competitive binding. The microtiter wells are coated with a polyclonal [rabbit] antibody directed towards an antigenic site on the Estriol molecule. Endogenous Estriol of a sample competes with an Estriol-horseradish peroxidase conjugate for binding to the coated antibody. After incubation, the unbound conjugate is washed off. The amount of bound peroxidase conjugate is inversely proportional to the concentration of Estriol in the sample. After the addition of the substrate solution, the intensity of color developed is inversely proportional to the concentration of Estriol in the sample.
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...
The ALPCO Glucagon ELISA is for the quantitative determination of glucagon in human EDTA plasma. This assay was developed for ease-of-use and demonstrates superior sensitivity while eliminating cross-reactivity issues present in other commercially-available assays.
ALPCO’s automated turbidimetric solution for calprotectin testing offers enhanced efficiency without compromising clinical sensitivity or specificity. Clinicians can prioritize endoscopic evaluation for the patients that need it most and quickly put IBS patients on the right treatment path.
Join our speaker from Department of Pathology , University of Utah School of Medicine, Dr. Heather Nelson, to discuss how to validate and launch a FDA-approved assay.
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.
