There are three major parameters of an RT PCR test. They are-
Collection: This is the first parameter of the test when the swab sample for testing is collected.
Extraction: Extraction is a technical process of segregating the genetic materials from the sample collected for further analysis.
PCR: As the name suggests, this is the key step where the separated genetic materials are stained with enzymes and then tested in a PCR machine for the SARS-CoV-2 virus.