Pregnancy Test Immunoassay
Antibodies in laboratories
In order to fulfil their natural role in the body, antibodies are tailor-made to recognise specific structures on bacteria and viruses. They bind to these invaders and make them easier to destroy. However, it is possible to produce antibodies against many other substances. Their specificity makes them valuable laboratory reagents. The vast number of antibodies on the market reflects their wide range of application. Ways in which antibodies are used include:
• Antibodies tagged with fluorescent dye can be used to visualise a specific protein or structure within cells and tissues. When viewed under a fluorescent microscope, the antibodies appear in glowing colours. Differently coloured dyes enable several different structures to be highlighted simultaneously.
• ELISA (enzyme-linked immunoassay) tests detect the presence or measure the amount of a substance in a sample. They use antibodies linked to an enzyme. The enzyme catalyses a biochemical reaction which results in a signal, for example, a change in colour. The quantity of test substance present is calculated from the strength of the signal. The home pregnancy test is an ELISA. When used to test urine, a colour change shows that the pregnancy hormone is present.
• Western blot tests are used to investigate mixed proteins in a sample. The proteins are separated out by placing the sample on a gel through which an electric current is passed. Blotting paper is placed over the gel to pick up the separated proteins. Antibodies tagged with enzymes are used to stain the proteins to identify them.
These three methods using antibodies are widely employed in every area of biological and medical research. The importance of antibody research is illustrated by the size of its contribution to biotechnology. Antibodies are at the heart of attempts to improve future treatment for health conditions. To help cope with this extraordinary demand, we at Novus Biologicals offer over 55,000 products in our antibody catalogue.
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Genzyme OSOM Card Pregnancy Test 25/Box $45.50 The OSOM Card Pregnancy Test is ideal for rapid, accurate detection of early pregnancy. Featuring the traditional card design, this immunoassay is designed for the qualitative detection of human chorionic gonadotropin (hCG) in urine. Clear black-and-white results are ready in only 3 minutes and have a high sensitivity of 20mIU/mL. Tests may be stored for a full 24 months at room temperature. 25 te… |
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GENZYME OSOM® HCG Urine Test 50/Kit $52.43 The OSOM hCG Urine Test provides reliable detection of early pregnancy with the ease of a dipstick test. This immunoassay is designed for the qualitative detection of human chorionic gonadotropin (hCG) in urine. Easy-to-read, two color results are ready in under five minutes and may even be visible in as little as one minute. The economical dipstick tests have a sensitivity of 25mIU/mL. 50 tests a… |
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Lateral Flow Immunoassay $218.26 Due to the simplicity, relative accuracy, fast result reporting, and user-friendliness of lateral flow immunoassay, its use has undergone tremendous growth in the diagnostic industry in the last few years. Such technology has been utilized widely and includes pregnancy and woman’s health determination, cardiac and emergency conditions monitoring and testing, infectious disease including Flu screening, cancer marker screening, and drugs abuse testing. This book covers the scope of utilization, the principle of the technology, the patent concerns, information on the development and production of the test device and specific applications will be of interest to the diagnostic industry and the general scientific community. |
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Immunoassay Test Strip for MicrocystinLr Detection. $115.71 MicrocystinLR (MCLR) is hepatotoxic to animals and humans with disruption of liver structure causing cytoskeletal damage, necrosis and pooling of blood in the liver, leading to large increase in liver weight. It is also a strong liver tumor promoter and protein phosphatase inhibitor. MicrocysinLR binds protein phosphatases 1 and 2A, and influences regulation of cellular protein phosphorylation. In the present study, a colloidal gold based immunoassay test strip was developed for MicrocystinLR detection. The detection limit was found to be 1 ng/mL. 5 nm colloidal gold test strips exhibits more efficient for detection, compared with 20 nm colloidal gold test strips. The interaction between MicrocystinLR antibody (immunoglobulin G) and colloidal gold nanoparticles was investigated by various analytical methods, including Ultraviolet/Visible (UVNIS), Fourier Transform Infrared (FTIR) and Fluorescence spectroscopy as well as transmission electron microscopy (TEM). Author: Xu, Jiesi Binding Type: Paperback Number of Pages: 64 Publication Date: 2011/09/02 Language: English Dimensions: 9.69 x 7.44 x 0.13 inches |
