The cost of PCR examination for cats varies from region to region and clinic, usually ranging from RMB 100 to RMB in 500 yuan. PCR examination is a molecular biological examination method, which can detect pathogens, gene mutations and genotypes of cats, so it is usually used to detect infectious diseases, genetic diseases or vaccination effects of cats. However, it should be noted that PCR examination is only an auxiliary diagnostic method and cannot replace clinical diagnosis and treatment. If you want to do a PCR test for cats, it is recommended to consult the local pet hospital first, get relevant information, choose the appropriate clinic and test items, and ensure the accuracy and practicability of the test.