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  • Safe and easy to use
  • Same day shipping on business days if you order before 4pm

What is the difference between a PCR and a blood test?

A PCR, or Polymerase Chain Reaction, test, is usually done with a cotton swab, a caretaker will go deep into the nostrils to take a sample of your sputum. Two samples will be taken, one from deep inside the nose, and one from the inside of the mouth. If the COVID-19 virus is incubating in your body, parts of the virus (the RNA genetic material) will be present in the sputum. The samples will be sent to a lab, where a PCR-detection machine will be able to detect the virus with the help of spectrum light. Although a PCR-test can very accurately confirm the incubation stage of the SARS-CoV-2 virus, it will not be able to confirm whether you have the COVID-19 coronavirus, which is often the result of infection with the SARS-CoV-2 virus. Whether you have the COVID-19 coronavirus can only be confirmed with a blood test.

A PCR-test and a blood test are complementary to each other throughout the life cycle of the disease as PCR is generally used in the first phase of the disease and blood test are in the second stage of the disease. After the incubation period, a person infected with SARS-CoV-2 virus will show symptoms of the coronavirus. Simultaneously, while the infection is taking shape, your body will produce antibodies to fight the virus. Based on the antibodies your body is producing when confronted with the COVID-19 virus, a blood test can tell whether the virus is present in your blood. Not all blood tests are accurate though, so it’s very important to use a test which is both accurate and can tell you at what stage of the disease you are.

Our blood test is one of the very few blood tests currently available to be able to indicate the presence of IgM-antibodies, which are the measurement for the stage of infectiousness of the disease, as well as the presence of IgG-antibodies, which is the measurement for immunity against the disease. The test can also indicate whether there is a combination of the two, when there are both IgM-antibodies and IgG-antibodies in your blood, which means the virus is still virulent in your body but immunity is also being built up.