Covid-19 is the new virus that has been devastating the world. People are anxiously awaiting tests to determine whether they have been infected. This article will discuss the main types of tests used to diagnose Covid-19: PCR (polymerase chain reaction) and rapid covid testing in Brawley.

What Is Covid-19: Causes and Symptoms

Covid-19 is a contagious respiratory disease caused by the SARS-CoV-2 virus. It can cause mild to severe illness, sometimes leading to death. The common symptoms of Covid-19 include fever, dry cough, tiredness, loss of taste or smell, sore throat, and difficulty breathing. Other symptoms of Covid-19 may include headache, muscle or joint pain, and nausea. People with medical conditions such as asthma, diabetes, obesity, heart disease, and chronic lung diseases are at higher risk for illness from Covid-19.

What Is a Rapid Test?

A rapid Covid-19 testing in Brawley, CA, is an antigen test to detect the presence of a specific antigen in the body. It is typically performed as an immunoassay, a test that uses antibodies to detect antigens. Rapid tests are usually less accurate than PCR tests but can provide results more quickly, making them useful for screening large numbers of people at once.

Rapid tests work by detecting the presence of a specific antigen in the body. Antigens are proteins or molecules the immune system recognizes, which trigger an immune response. Rapid tests for Covid-19 can usually detect antigens from SARS-CoV-2, the virus that causes Covid-19.

Here's how the test is performed: The patient collects a nose or throat swab sample and places it into the test kit. The medical provider then adds reagents, chemicals used to detect antigens in the sample. If antigens from SARS-CoV-2 are present, they will bind to the antibodies in the reagent. This triggers a chemical reaction that changes the color of the test line, indicating a positive result for Covid-19.

What Is a PCR Test?

A PCR test is a molecular diagnostic test that looks for genetic material from the virus in patient samples. While most rapid tests detect antigens, PCR tests look for genetic material from the virus. To use a PCR test, a sample must be collected from the patient and sent to a laboratory for analysis. PCR tests are susceptible and can detect even small amounts of virus in samples, making them ideal for detecting an active infection. However, this test must be conducted in a lab setting, which makes it more time-consuming than rapid tests.

Some added benefits of the PCR tests are that they have a higher accuracy rate than rapid tests and are better at detecting early-stage infections. This is because there might not be enough of an antigen present in the sample for it to be detected by a rapid test. 

Also, PCR tests can detect different variations of the virus, which may be necessary for the context of emerging new variants. PCR tests are considered more reliable than rapid tests and are better at confirming a positive result; however, they take longer to get results due to the time it takes for the lab analysis. 


Whether you choose a Rapid or PCR test, the most important thing is to get tested if you're showing symptoms of COVID-19. Testing can provide important insight into your health and allow you to take steps to protect yourself and those around you. It can also help identify potential hotspots with high concentrations of the virus.