329 results found
Medical tests
… in the evening and during the early phase of sleep. But if you sleep during the day and are up at night, this pattern may be reversed. If you do not have this daily change (diurnal rhythm) in cortisol levels, you may have overactive adrenal glands. This condition is …
Medical tests
… sclerosis (MS) , the doctor will collect information about your symptoms. The kinds of symptoms, as well as how and when they occur, are important in evaluating whether you might have MS. Even symptoms that you might have had several years ago can be important. The …
Medical tests
… in the blood and fluid levels in the body, which affects your blood pressure. A renin test is often done at the same … are low. How To Prepare For 2 to 4 weeks before the test, you may be asked to stop taking medicines that can affect … medicines (especially beta-blockers and ACE inhibitors). Your doctor may have you take other medicines for a few …
Medical tests
… 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 …
Medical tests
… (sodium). When a tumour that makes aldosterone is present, your aldosterone level will be high while a renin level will … test is often done at the time of a routine blood test. You don't need to do anything before having routine blood … that are very salty, such as bacon, canned soups and vegetables, olives, bouillon, soy sauce, and salty snacks like …
Medical tests
… abnormal results from a mammogram. Look at the breasts in younger women because their breast tissue is often more … See how far cancer has spread in a breast. Check your breasts if you have silicone breast implants or dense breasts. In these …
Medical tests
… skin infection. How To Prepare In general, there's nothing you have to do before this test, unless your doctor tells you to. If you are taking any medicines, particularly …
Medical tests
… These tests measure electrical activity that occurs in your eye when you look at something. Electrophysiology includes different … (ERG) ERG measures the retina's electrical response while you look at different patterns or flashes of light. An ERG …
Medical tests
… and uncontrolled diabetes. The night before the blood test, you will take a dexamethasone pill. The next morning, the cortisol level in your blood will be measured. If your cortisol level stays high, Cushing's syndrome may be …
Medical tests
… labour, and delivery. It keeps track of the heart rate of your baby ( fetus ). It also shows how long each contraction of your uterus lasts. Your baby's heart rate is a good way to tell if your baby is …
