pcr pcr pcr or pcr may refer to: science and medicine pathologic complete response (pcr), in neoadjuvant therapy polymerase chain reaction covid-19 testing, often performed using the polymerase chain reaction method phosphocreatine, a phosphorylated creatine molecule principal component regression, a statistical technique protein/creatinine ratio, in urine technology passport carrier release, telecommunications software peak cell rate, on atm networks platform configuration register, a trusted execution technology implemented using a tpm processor control region, a windows data structure program clock reference, in mpeg transport streams xm pcr, a satellite receiver political parties parti communiste réunionnais or communist party of réunion partido comunista revolucionário or revolutionary communist party partido cívico renovador or civic renovation party, dominican republic partidul comunist român or romanian communist party other uses put/call ratio, in finance amdo tibetan (iso 639 code pcr), a language germán olano airport (iata code pcr), colombia palestinian center for rapprochement between peoples, palestine pancritical rationalism, a development of critical rationalism and panrationalism paul cruickshank racing, an australian motor racing team police control room, an emergency control centre practical chinese reader, a textbook production control room, of a television studio princess connect! re:dive, a video game