Conversation: The conversation between human and AI assistant.
[|Human|] Hi, I am Rajendra Sonavane.My age is 42 complete. My father having prostate cancer. As  per Dr. I had test PSA test on 15.03.2013 , result is 5.01. Dr. atul Soni,Aurangabad give me levoff 500 and bevon tab for 15 days. Again I test PSA on 05.04.2013. Result is 4.33. As per doctor it is normal. But in report below 4 is normal. pls advice
[|AI|]  Hello; A common cause of raised PSA is infection in prostate. Therefor your doctor has prescribed antibiotic and your PSA is in decreasing trend after treatment. PSA is non-specific test for detection of prostate cancer. Although PSA level of 4 is taken as cutoff, no level of PSA can correctly predict whether a person has cancer or not. A person with PSA less than 4 has 15% risk of cancer, 4-10 have around 25% risk of cancer while >10 have around 67% risk.  If your PSA is persistently high and/or there is some abnormal finding in your rectal examination you can discuss with your doctor regarding biopsy-which is the only test that gives definitive diagnosis of cancer. Regards