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.
But imaging tests for prostate cancer such as CT and MRI scans canât detect all areas of cancer, especially small areas of cancer in lymph nodes. A newer method known as multiparametric MRI can be used to help determine the extent of the cancer and how aggressive it might be, which might affect a manâs treatment options.