1 Add 10 drops of Benedicts solution to each test tube. 2  Place the test tubes in the hot-water bath. Heat the test tubes for 3 to 5 minutes, or until the indicator changes color, if it changes color.  With a test tube holder, remove the tubes from the hot-water bath and place them back in the test tube rack.
Prostate Ultrasound. Prostate Ultrasound. Definition. A prostate ultrasound is a diagnostic test used to detect potential problems with a man's prostate. An ultrasound test uses very high frequency sound waves that are passed through the body. The pattern of reflected sound waves, or echoes, shows the outline of the prostate.
In men, pelvic ultrasound is a valuable tool for evaluating the prostate gland, as well as for evaluating the seminal vesicles. A pelvic ultrasound exam can help to identify stones, tumors and other disorders in the urinary bladder in both men and women. Because ultrasound provides real time images, it can also be used to guide procedures, such as needle biopsies, in which a needle is used to sample cells from an abnormal area for laboratory testing.