329 results found
Medical tests
… Eyes On this page: Test Overview Why It Is Done How To Prepare How It Is Done How It Feels Risks Results Test Overview … These tests measure electrical activity that occurs in your eye when you look at something. Electrophysiology … (EOG) EOG tests how well electrical currents are working in the whole eye. It is done to check for …
Medical tests
… On this page: Test Overview Why It Is Done How To Prepare How It Is Done How It Feels Risks Results Related … It can show blocked or reduced flow of blood through narrow areas in the major arteries of the neck. This problem could … stroke. How To Prepare Depending on what the test is for, you may be asked not to eat or drink after midnight before …
Medical tests
… nicotine—or the chemicals it produces, such as cotinine—in your blood or urine. It's usually done by testing a sample … have nicotine. This includes pipe tobacco, cigars, cigarettes, chewing tobacco, and snuff. It also includes vapes (e-cigarettes) and quit-smoking aids like nicotine gum and …
Medical tests
… On this page: Test Overview Why It Is Done How To Prepare How It Is Done How It Feels Risks Results Related … labour, and delivery. It keeps track of the heart rate of your baby ( fetus ). It also shows how long each contraction … often, it is done using two flat devices (sensors). They are held in place with elastic belts on your belly. One …
Medical tests
… On this page: Test Overview Why It Is Done How To Prepare How It Is Done How It Feels Risks Results Related … Testicular examination and testicular self-examination are two ways to find lumps or other problems in the … the genitals, which are the penis, scrotum, and testicles. Your doctor will feel the organs and check them for lumps, …
Medical tests
… Tests On this page: Test Overview Why It Is Done How To Prepare How It Is Done How It Feels Risks Results Related … Test Overview Cholesterol and triglyceride tests are blood tests that measure lipids—fats and fatty substances used as a source of energy by your body. Lipids are found in your blood and are stored in …
Medical tests
… On this page: Test Overview Why It Is Done How To Prepare How It Is Done How It Feels Risks Results Related … pH) of the semen. White blood cell count. White blood cells are not usually present in semen. Why It Is Done A semen … reversal of a vasectomy has been successful. How To Prepare You may be asked to avoid any sexual activity that results …
Medical tests
… Test On this page: Test Overview Why It Is Done How To Prepare How It Is Done How It Feels Risks Results Related … glands then make a hormone called cortisol, which helps your body manage stress. Cortisol is needed for life, so its levels in the blood are closely controlled. When cortisol levels rise, ACTH …
Medical tests
… Test On this page: Test Overview Why It Is Done How To Prepare How It Is Done How It Feels Risks Results Related … Test Overview A ketone test checks for ketones in your blood or urine. Ketones are substances that are made … strips or tablets. Avoid getting toilet paper, pubic hair, stool, menstrual blood, or other foreign matter in the urine …
Medical tests
… Overview Exercise challenge and inhalation challenge tests are sometimes used to diagnose asthma and workplace asthma … challenge test, spirometry is done before and after you exercise on a treadmill or an exercise bicycle. … medicine. Spirometry may be done before and after you are given an inhaled medicine, such as methacholine or …
