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 general, ultrasounds (or sonograms) are technically used in medicine to detect changes in appearance of organs, tissues, and vessels or to detect abnormal masses. Most people think of them as what pregnant women get to see the fetus inside their body. However, they have many, many other important uses. Ultrasound scanning is noninvasive and is usually painless. It is widely available, easy-to-use and less expensive than other imaging methods. It can be a safer option since it does not use any x-ray radiation and provides a clear picture of soft tissues that do not show up well on x-ray images. Ultrasounds can provide real-time imaging. Physicians may use ultrasound as a diagnostic tool but itâs not limited to diagnosis.