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By Sally Delacruz


Advancement in medical technology has brought new ways of detecting heart diseases in the human body. This is through the use of cardiac Elisa kits. These are diagnostic tools that work with samples and reagents in determining the existence of problems in the heart. This is done through looking out for color change in the reagents.

This process depends is an enzyme dependent process that uses color change as an indicator of reactions in reagents. The process works through an enzyme immunoassay which combines with antigens producing the subsequent color change. This test is capable of establishing the presence of both antibodies and antigens.

This exercise is capable of detecting antibodies and antigens in patients. This is very useful; it helps detect illnesses before they develop into chronic problems. Doctors are able to work on it during its early stages of development. The patient will, therefore, be able to eliminate the problems at an affordable value.

For proper working of these devices precision, sensitivity, accuracy and ability to work on a wide range of problems, and give many details are very important. Sensitivity helps in detecting any slight change in reaction when they are mixed with the samples. Accuracy, on the other hand, is required in ensuring that no errors are made in the experiments. The devices are also supposed to be specific to individual heart problems.

It is also important that the instruments are made in a way that makes them stable. To attain stability, one must cut down on the rate loss of these activities. This is possible through proper storage. Stability can also be achieved through minimizing the effects of the surrounding on the set-up. This means temperature, humidity and pressure have to agree with the standard lab requirements. There should be somebody to control incubator temperatures. If only one person is allowed to work on the research from beginning to end, it will be easy to achieve stability.

For proper working of this activity, the researcher must ensure that all standards, reagents and samples are prepared in advance. The next thing is addition of some samples to all the wells and incubating them for close to 2 hours. He should then aspire and add some reagents. Next, he should put it back in the incubator for an hour, and later aspire and wash the mixture three times. The substrate solution should then be added, and the mixture incubated for a period of between 20 and 25 minutes. After, this step, a stopping agent must be added to stop the reaction for the researcher to make readings.

The enzyme sandwich principle is applied in this experiment. Plates on the kits are coated in advance with specific antibodies for the problem under investigation. Standards or samples are then appropriately added to the plates. They normally contain antibodies which are specific to certain defects. Lastly, Avidin conjugate is put on each plate and then incubated.

After the addition of substrate solutions, it is only the wells that will contain type 3 of Tropin I. The reagents will then show a change in color. The reaction is brought to an end by adding a solution of sulphuric acid, and the change in color is measured is a special style.




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