PSA test results may change within a month.
PSA is a prostate-specific antigen, a serine protease produced by the ductal epithelium of the prostate.
Multiple factors can cause PSA to be elevated, such as urinary tract infections, prostatitis, prostate enlargement, catheterization, ejaculation, prostate massage, and cystoscopy. If any of these conditions are present within a month of the test it may lead to a transient increase in PSA.
PSA is a prostate-specific antigen and is now an important indicator for prostate cancer screening. Since there are many reasons that can cause PSA to be elevated, when PSA is found to be elevated during clinical examination, prostate cancer should be ruled out first before confirming the diagnosis of other diseases.
Patients do not need to be too anxious when PSA is found in the initial examination, and should cooperate with the doctor to do the confirmatory test to facilitate the follow-up treatment.