a highly sensitive test that can detect small amounts of DNA or RNA in blood or tissue samples using an amplification technique that multiplies the existing DNA/RNA so that it can more easily be detected.
POLYMERASE CHAIN REACTION (PCR) ASSAY
Meaning of POLYMERASE CHAIN REACTION (PCR) ASSAY in English
AIDS English Glossary. Английский словарь СПИДа. 2012