165 results found
Medical tests
… all or most of your clothes above the waist. (You may be allowed to keep on your underwear if it does not get in the … of damage to cells or tissue from radiation, including the low levels of radiation used for this test. But the chance of damage from the X-rays is extremely low. It is not a reason to avoid the test. If you need an …
Medical tests
… and travels throughout your body and to your brain. This allows blood alcohol levels to increase quickly. The amount of … meter shows your BAC in a digital display window after you blow into a mouthpiece attached to the meter. This type of … driving abilities. Your driving may be impaired even with a low BAC level, such as below 0.05. The breath alcohol test …
Medical tests
… These tests are not thyroid hormone tests. High or low levels of thyroid hormones also can be signs of thyroid … after thyroid hormone tests to find the cause of high or low levels of thyroid hormones. High levels of these … if you have a goiter or symptoms of thyroid disease. The following tests may be done: Antithyroid peroxidase antibody: …
Medical tests
… into water and carbon dioxide. When the oxygen level is low, carbohydrate breaks down for energy and makes lactic … as heart failure , a severe infection (sepsis), or shock —lower the flow of blood and oxygen throughout the body. Lactic acid …
Medical tests
… of damage to cells or tissue. That's the case even with the low-level radioactive tracer used for this test. But the chance of damage is very low compared with the benefits of the test. Most of the … tumour or other growth may be present. The tracer may not flow normally from the salivary glands into the mouth. This …
Medical tests
… able to make normal amounts of prolactin so levels will be lower. Why It Is Done A test for prolactin is done: To find … may be checked when a man's testosterone levels are really low. To see whether a tumour in the pituitary gland (called … be done to confirm whether a tumour is present. A normal or low prolactin level does not always mean there is no …
Medical tests
… Help diagnose celiac disease. Check how well a gluten-free diet is working as a treatment for celiac disease. Look for … that contain gluten. So if you have started a gluten-free diet, your doctor will have you go back to eating gluten … Help diagnose celiac disease. Check how well a gluten-free diet is working as a treatment for celiac disease. Look for …
Medical tests
… the spine in the neck (cervical), upper back (thoracic), or lower back (lumbosacral). The entire spine can be seen in … as the lumbar spine, may be taken. MRI may be used to check low back problems. There are two main types of MRI—the … care decisions that are important to many health problems. Low Back Pain: Should I Have an MRI? Why It Is Done An MRI …
Medical tests
… tap, a needle is carefully inserted into the spinal canal low in the back (lumbar area). Samples of CSF are collected. … spinal canal. In rare cases, a spinal tap may be used to lower the pressure in the brain caused by too much CSF. How … positions help widen the spaces between the bones of the lower spine so that the needle can be inserted more easily. …
Medical tests
… The vibration speed of a sound wave determines how high or low a sound is (pitch). The height of the sound wave … for you to hear it. Frequency, or pitch (whether a sound is low or high), is measured in vibrations per second, or hertz … The human ear can normally hear frequencies from a very low rumble of 20 Hz to a high-pitched whine of 20,000 Hz. …
