 [ Symptoms ] what activities cause the psa to rise [ Disease ] in general if a man has had a normal psa reading in the past doctors do not tell patients to avoid anything before the next psa test however if you have had a prior borderline or elevated psa test and want to optimize your chances that the psa is not artificially elevated you may want to consider the following 1 no bike riding for several days 2 no ejaculation for 48 72 hours but do not abstain too long 3 no urologic instrumentation such as a urinary catheter or cystoscopy test 4 no vigorous digital rectal exams or anal sex