 [ Symptoms ] if you have a pap smear done how long should you wait to be tested for endometriosis [ Disease ] a pap smear does not test for endometriosis there is no simple test for endometriosis endometriosis is typically diagnosed based on symptoms of very painful periods and painful intercourse sometimes a procedure called a laparoscopy is performed to confirm and treat endometriosis during this procedure a small camera is inserted through the belly button to look for endometriosis while you are under general anesthesia