The Working Of Cardiac Elisa Kits

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 experiment works when the enzyme immunoassay binds with antibodies and substrate. When this occurs, color changes to indicate presence or absence of trouble. With these tools, it is possible to work with both antibodies and antigens. The amount of both of them can be determined by observing the color changes.

This test can also be used in detecting foreign bodies that exist in low concentrations. Heart problems can, therefore, be identified before they become chronic. The patient is advantaged; he will spend less money fighting a developing problem than he would have spent on a chronic one. This is because it is cheaper treating a disease while still in its early stages than when it has developed into a complex illness.

The best of these tools is one that is accurate, sensitive and capable of working in a wide range of samples. Sensitivity means being able to detect and show slight changes in the reagents. Accuracy, on the other hand, is being free of major errors in making measurements. It is also very important for the instrument to be made in a way such that, each heart defect has its own diagnostic equipment.

Stability is also important in the working of this equipment. To ensure stability, the loss rate of the activity has to be kept as low as possible. Good storage is also very important in ensuring stability. For the purpose of minimizing the effects of the environment on this experiment, standard lab conditions are very important; room temperature, standard pressure and humidity. The temperatures within the incubator should be closely regulated. It is also important to have one person working on the experiment from beginning to end.

For this experiment to work, one needs to prepare all samples, standards and reagents. He/she should then add a small amount of the sample to every well and then incubate for about two hours. After this, he should aspire then add some reagent and again incubate for about an hour. After this, he must aspire the mixture and wash it three times. The next step is addition of substrate solutions and then incubating for another 20 to 25 minutes. The last step is addition of stop solution and making readings.

The main principle applied here is enzyme sandwich. The plates inside the testing equipment are always coated with antibodies for specific heart defects. Samples are put into the plates in an appropriate manner. The main contents of the samples are specific biotin-conjugate antibodies. Before incubating, a conjugate of Avidin is added to all plates.

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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