How Reliable Is COVID-19 Testing?
The reliability of COVID-19 Testing largely depends on the type of test used. PCR (Polymerase Chain Reaction) tests are considered the gold standard due to their high sensitivity and accuracy. They can detect even small amounts of the virus's genetic material, making them highly reliable for diagnosing current infections. However, the accuracy of PCR tests can be influenced by factors such as the timing of the test relative to exposure or symptom onset, and the quality of the sample collected.
Rapid antigen tests, while faster and more convenient, are generally less accurate than PCR tests, especially in asymptomatic individuals or those in the early stages of infection. These tests are more likely to yield false negatives, meaning they might miss an active infection. Despite this, rapid tests are still valuable for quickly identifying cases in high-risk settings. Confirmatory PCR testing is often recommended if a rapid test result is negative but there is a strong suspicion of COVID-19.
