If you are feeling under the weather and you suspect that you may have Covid-19, you should consider getting a rapid antigen test. You could also use a PCR test, but a rapid test would be much better if you want to get the results in the shortest time possible.
You probably have questions about the reliability of a PCR test. There are many rapid antigen test brands on the market right now. Their respective performances are generally measured against a “gold standard” reference. The latter may be an expert opinion or a reference standard examination to categorize patients as “well” or “unwell”. The evaluation is based on two indicators, namely the test’s intrinsic and extrinsic validity. The intrinsic validity refers to the ability of the test to estimate whether the disease is present. It is evaluated by test sensitivity (true positive rate) and test specificity (true negative rate). Extrinsic test validity is linked to the characteristics of the population that is tested. It is based on the prevalence of a given disease in a population group. Predictive validity is another factor. It is defined by the positive or negative predictive values of the test for a given population. Before you go ahead to take a rapid antigen test for travel, you need to know the precautions to take in order to make it possible to avoid a number of factors that are often synonymous with errors, such as sample management, complex equipment. In the context of tests carried that are out by professionals, two essential precautions are staff training and personal protection. Staff must be trained in the sampling procedure to be carried out as well as in the interpretation of results. In case of tests for contagious diseases, the personnel performing the sampling and testing need to have adequate protective equipment, such as masks, gloves and so on. For more information on rapid antigen testing, visit our website at https://www.harleymedic.co.uk/
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