TESTS TO DIAGNOSE AUB. Apart from the routine tests like complete blood count, TSH etc following test/ investigations are done. Ultrasound exam—Sound waves are used to make a picture of the pelvic organs. Hysteroscopy—A thin, lighted scope is inserted through the vagina and the opening of the cervix. It allows your ob-gyn or other health care professional to see the inside of the uterus. Endometrial biopsy—A sample of the endometrium is removed and looked at under a microscope. Magnetic resonance imaging (MRI)—An MRI exam uses a strong magnetic field and sound waves to create images of the internal organs. MRI is mainly done to diagnose adenomyosis. To be continued........