272 results found
Medical tests
… testing involves having a skin or blood test to find out what substance, or allergen , may trigger an allergic … A small amount of a suspected allergen is placed on or below the skin to see if a reaction develops. There are three … on the skin, and a series of scratches or needle pricks allows the solution to enter the skin. If the skin develops a …
Medical tests
… taken. How long the test takes Skull X-rays usually take about 10 to 20 minutes. You will wait about 5 minutes until … 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
… right away to look for the cause. These tests can find out which antibodies are in the blood in higher amounts than … the test is positive, the level of antibodies is usually low. Some healthy people can have an increased amount of ANA … the test is positive, the level of antibodies is usually low. Some healthy people can have an increased amount of ANA …
Medical tests
… . The two upper chambers are called atria, and the two lower chambers are called ventricles. A natural electrical … irregular heartbeat is working. Help you make decisions about starting an exercise program if you have been inactive … from falling off. On the treadmill , you will start out slowly in a level or slightly inclined position. After …
Medical tests
… urine, your brain is overriding this reflex. When you allow the reflex to occur, urination occurs. A problem … with water to measure its ability to hold in and push out the water. Medicine may also be given to see whether … office. You will need to take off most of your clothes below the waist. You will be given a cloth or paper covering …
Medical tests
… eye. Here are some common tests that check for blurred or low vision. Visual acuity (sharpness) tests. These tests help your doctor find out if you have a problem that affects how well you can see. … the other visual acuity tests show that your eyesight is below normal and can be corrected by glasses. Visual field …
Medical tests
… travels through the bloodstream to the kidneys. The tracer flows through the blood vessels in the kidneys and then is … of kidney scans include a scan that looks at how blood flows to and through the kidneys, a scan that looks at the … and a scan that looks at how urine is made and flows out of the kidneys. Sometimes a doctor will do multiple …
Medical tests
… line placed in a vein. But the tracer also may be given by mouth or by inhaling it into the lungs. The tracer then … 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 …
Medical tests
… taken. How long the test takes Facial X-rays usually take about 10 to 20 minutes. You will wait about 5 minutes until … 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
… will take 15 to 30 minutes. The whole procedure will take about an hour. After the procedure, you'll stay in the … procedure. Preparing for the procedure You may need to stop eating and drinking before the day of the procedure. If this … asked to lie on an examination table. A sandbag, a firm pillow, or a rolled towel will be placed under your body to …
