329 results found
Medical tests
… of TB protein ( antigens ) under the top layer of skin on your inner forearm. If you have ever been exposed to the TB bacteria ( Mycobacterium tuberculosis ), your skin will react to the antigens by developing a firm … of PPD in a shot is put under the top layer of skin on your forearm. This is a good test for finding a TB …
Medical tests
… alcohol test measures the amount of alcohol (ethanol) in your body. Alcohol is quickly absorbed into the blood and … in the blood reaches its highest level about an hour after drinking. But food in the stomach may increase the amount of … increases. Your weight. The more you weigh, the more water you have in your body. The water dilutes the alcohol …
Medical tests
… hormone (ADH) partly controls serum osmolality. Water constantly leaves your body as you breathe, sweat, and urinate. If you do not drink enough water, the concentration of chemicals in your blood (serum osmolality) increases. When serum …
Medical tests
… with the results of a D-xylose test. For this reason, your doctor may instruct you to temporarily stop these … before the test. Do not eat or drink anything except water for 8 to 12 hours before having this test. Children … be allowed to eat until the test is completed. How It Feels Drinking the D-xylose solution can make you feel sick to …
Medical tests
… women for gestational diabetes. How To Prepare Tell your doctor about all the prescription and non-prescription … before your first blood sample is taken. (You can drink water before the test.) How It Is Done A blood sample is … extremely sweet glucose liquid. Some people feel sick after drinking the glucose liquid and may vomit. Vomiting may …
Medical tests
… and fatty substances used as a source of energy by your body. Lipids are found in your blood and are stored in tissues. They are an important … Your doctor may ask you to not eat or drink anything except water for 9 to 14 hours before your blood test. In most …
Medical tests
… is both an electrolyte and mineral. It helps keep the water (the amount of fluid inside and outside the body's … there's nothing you have to do before this test, unless your doctor tells you to. How It Is Done A health … can be caused by a high-sodium diet or by not drinking enough water and being dehydrated . Dehydration may …
Medical tests
… By a person coughing up mucus. By breathing in a saltwater (saline) mist and then coughing. During bronchoscopy , … if the sputum sample is to be collected at home or in your doctor's office. Bronchoscopy sample Your doctor will … tell you how soon before the procedure to stop eating and drinking. Follow the instructions exactly about when to stop …
Medical tests
… the blood (such as electrolytes ). A chemistry screen tells your doctor about your general health, helps look for certain problems, and … You may be instructed not to eat or drink anything except water for 9 to 12 hours before having your blood drawn. This …
Medical tests
… disease . A tumour in an adrenal gland. How To Prepare If your doctor tells you to fast before your test, do not eat or drink anything except water for 9 to 12 hours before you have your blood drawn. In …
