Any idea why false positives appear in children with cancer (neuroblastoma, osteosarcoma, etc) under chemotherapy? Rapid tests result positive but PCR results negative.
DR CLAUDIA!! Beware of false negatives in diagnostic testing of COVID-19 ... if a person has been infected with SARS-CoV-2, the virus that causes COVID-19.
Article Variation in False-Negative Rate of Reverse Transcriptase Po...
Yes, such studies are being conducted with us. The practical use of the virus to fight cancer is being studied. The virus selectively infects cancer cells. Another thing is that the human body of a patient with cancer has a low immune status. Regards, Pushkin Sergey Viktorovich
Rapid test is not gold standard and PRC has also limitations. 30% false negative can be found even in PCR. Time gap might be another factor too. It's not rare to become negative after 2-3 days.