PCR Tests - Types of Test, Costs, Symptoms, Procedure, Benefits and More..

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The PCR (polymerase chain reaction) test is considered to be fast, a highly accurate in the diagnosis of the certain infectious diseases along with genetic changes. The different tests that work by finding and elaborating the DNA or the RNA of the pathogen (also called a disease-causing organism) or any abnormal cells that are present in the sample as given.

The parts of the genetic material that are assessed in PCR are the DNA and RNA. The details of which are given below.

Unlike any other tests, the PCR tests would be able find evidence of the disease in earliest stages of the infection. As other tests could fail in minute detection of the sample, PCR is an accurate procedure.

The Antibodies are the proteins that are made by the immune system which attack the foreign substances, for example:  viruses and bacteria. The PCR tests make multiple copies of your sample and it would detect the disease.

During the PCR test, there are small amount of the genetic material in your sample which is copied in a multiple times. The copying process is also called as amplification. If there are any pathogens in your sample, the amplification would make them easier to see and assess.

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Frequently Asked Questions


An analytic performance of the PCR based tests is considered to be good, with most of the assays able that will be able to detect 500-5000 copies of viral RNA/mL1 near about 100% of the time (analytical sensitivity) and then the tests would not cross react with the other viruses, so analytical specificity will be 100% also.

The At-home tests or the antigen tests in the clinic or the workplace have the ability to give the results in about 15-30 minutes. In case of the PCR and then the other molecular tests  are then sent to the  lab that would usually returned in the 1-2 days after lab gets test result.

The positive test that means that HLA-B27 is also present. This suggests that the greater-than-average risk for the time for developing the symptoms or having the certain autoimmune disorders.

Your PCR test (polymerase chain reaction) is the type of the molecular test which checks for dengue. These tests would be done during first seven days after the symptoms begin. The Tests done later than that do not have accurate results.

For the symptomatic patients during first 1-7 days of you being sick, the serum would be tested with a NAAT and for the IgM antibody as both tests performed in serum.

If you are performing both the tests would detect more cases than performing only one test. After the day 7 of illness, any few cases will be detected by the NAAT.

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