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lundi 6 octobre 2014

How ELISA Kits Help Save Lives While Saving Money At The Same Time

By Jocelyn Davidson


In the medical field, new medicines, treatment methods and procedures are introduced at such a dazzling pace that even medical experts struggle to stay up to date. In the field of diagnostics many advances have also been made. If a disease can be diagnosed during its early stages it is easier to treat and the chances of success are much better. ELISA kits have proven to be a major breakthrough. The enzyme linked immunosorbent assay enables diagnosticians to recognize certain conditions quickly.

The enzyme linked immunosorbent assay, or EIA as it is known for short is performed in a laboratory. The test is easy to run and many tests can be performed at the same time. The purpose of the test is to measure the concentration of both antigens and antibodies in the blood sample. The ability to measure this concentration is a very important part of the diagnostic process.

When there are antibodies present in a blood sample it means that the body has produced them to counteract the effects of a harmful substance, called antigens. If there are antibodies present, it is certain that there are also antigens because the antibodies are only produced when a threat is detected. By identifying the specific type of antibody produced by the body it is also possible to determine the exact nature of the threat.

The administration of the test is quick and painless. All that is required from the patient is a small blood sample. The sample is taken to a laboratory where it is added to a series of petri dishes that were prepared with different antigens. The antibodies can be identified when they react to specific antigens. The further reactions between the two agents are then studied by adding enzymes.

There are different forms of the EIA test, ranging from very simple to extremely complex. Different kits are used for the different forms of the test. With the direct EIA test, for example, the antigen is first covered with a multiwall plate. In this case the antibody in the blood sample will only react with the antigen if specific enzymes are added.

With the indirect EIA test polystyrene plate is used to cover the antigen. This allows the technician to process the test in two distinct stages before the antibody will be able to identify the antigen and react with it. During each stage it is possible to identify both primary and secondary antibodies. The benefit of this ability is that it saves money and time.

The sandwich EIA test requires the antibodies to be matched in pairs. The first one is covered with polystyrene and the role of the second antibody is to act as a detection agent. The main purpose of this test is to find out what the concentration of the analyte is. It is an extremely accurate test and can be used to diagnose latent diseases.

There can be little doubt that EIA test is an important tool that can help doctors to quickly and effectively diagnose a variety of diseases. The fact that the test even allow for the diagnosis of latent diseases means that many lives can be saved and treatment can be offered when there is still a good chance of success.




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