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.
Doctors use the digital rectal exam (DRE) as a relatively simple test to check the prostate. Because the prostate is an internal organ, your doctor cannot look at it directly. But because the prostate lies in front of the rectum, he or she can feel it by inserting a gloved, lubricated finger into the rectum. It may be performed in the screening of prostate cancer.