Pregnancy Diagnostic Tests: Principle, Procedure, and Results
Enzyme immunoassay (EIA), enzyme-linked immunosorbent assay (ELISA), is the most widely used type of immunoassay. ELISA is a rapid test for detecting the presence and amount of either antigen or...
EIA (Enzyme Immunoassay) - Lab Tests Guide
2023年8月20日 · Pregnancy Testing: Home pregnancy tests utilize EIA to detect the presence of a hormone called human chorionic gonadotropin (hCG) in urine samples, indicating pregnancy. Allergy Testing: EIA is employed in allergen-specific IgE testing to identify allergens that trigger allergic reactions in individuals.
Enzyme Immunoassay (EIA) Test: What It Is and How It Works
2024年2月20日 · An enzyme immunoassay (EIA) or an enzyme-linked immunosorbent assay (ELISA) is a blood or urine analysis that can help diagnose many infections and inflammatory conditions. This is a simple test that does not cause side effects. Your EIA can help in diagnosing the cause of your symptoms and is used to guide your therapy.
ELISA: What It Is, Purpose, Procedure & Results - Cleveland Clinic
Researchers consider ELISA to be the gold standard of immunoassays. Tests that use ELISA can help diagnose a wide range of conditions, from bacterial and viral infections (like Lyme disease and HIV) to endocrine conditions, like thyroid disease. Home pregnancy tests are even based on the ELISA technique.
ELISA for Home Pregnancy Test
Home pregnancy test utilizes the principle of sandwich enzyme immunoassay, with a unique mono-mono antibody combination specific against hCG present in urine/serum. The patient's urine/serum specimen is allowed to react with the monoclonal antibody directed against hCG, coated on the microtiter wells and the monoclonal antibody - enzyme ...
20.4: Enzyme Immunoassays (EIA) and Enzyme-Linked …
2024年4月21日 · Enzyme immunoassays (EIA) are used to visualize and quantify antigens. They use an antibody conjugated to an enzyme to bind the antigen, and the enzyme converts a substrate into an observable end …
What’s New in Pregnancy Tests - Journal of Obstetric, …
An even more recent test, enzyme immunoassay, holds great promise for the future. It uses a complex monoclonal anti-hCG with enzymes to bind with hCG, a substrate and chromogen. The subsequent reaction results in a visible color change.
Pregnancy Tests | Embryo Project Encyclopedia
2010年9月2日 · In 1960, the hemagglutination inhibition test, an immunoassay to test for pregnancy, became available. Developed by Leif Wide and Carl Gemzell, this test uses a mixture of the patient’s urine and hCG antibodies. The test …
Understanding How Home Pregnancy Tests Use Elisa Technology
2023年12月22日 · These tests utilize a technology called Enzyme-Linked Immunosorbent Assay (ELISA) to detect the presence of pregnancy hormones, specifically human chorionic gonadotropin (hCG), in a woman's urine. The ELISA technology used in home pregnancy tests is based on the principle of antibody-antigen interaction.
Navigating At-Home Pregnancy Tests - Pharmacy Times
2010年6月15日 · 2 Home pregnancy tests use monoclonal or polyclonal antibodies in an enzyme immunoassay, and the antibodies adhere to a solid surface such as a stick, bead, or filter. 2 If urinary hCG is present, it will form a complex with these antibodies and another antibody that is coupled to an enzyme that reacts with a chromogen to produce a particular ...