329 results found
Medical tests
… on the nerve layer ( retina ) at the back of the eye. This causes blurred vision. Refraction is done as a routine part … field tests These tests may be done: To check for vision loss in any area of your visual field. To screen for eye … your child co-operate better during the real testing. Many medicines may affect the results of vision tests. Be sure to …
Medical tests
… to the brain. Symptoms may include severe headaches, memory loss, slurred speech, dizziness, blurred or double vision, … the test and for 1 day after the test. If you take these medicines, talk with your doctor. An angiogram can be done … you go home. Arrange to have someone take you home, because you may get a sedative before the test. If you stay …
Medical tests
… Bones naturally become thinner as you grow older. This is because existing bone tissue is broken down faster than new … them more likely to break ( fracture ). With further bone loss, low bone density (sometimes called osteopenia) can … calcium and vitamin D . And you may need to take certain medicines. There are several different ways to measure bone …
Medical tests
… important to get the right amount of calcium in your food because the body loses calcium every day. Foods rich in … any symptoms. Calcium levels need to be very high or low to cause symptoms. Why It Is Done A blood calcium test may be … used to check for a lack of calcium in your diet or for the loss of calcium from the bones ( osteoporosis ). The body …
Medical tests
… for hereditary hemochromatosis, an inherited disorder that causes the body to absorb too much iron. The iron then … and other organs. In its early stages, hemochromatosis can cause joint and belly pain, weakness, lack of energy, and weight loss. It can also cause scarring of the liver ( cirrhosis ), …
Medical tests
… higher when the liver is severely damaged or diseased, because the liver normally breaks down lactic acid. Very high … value means lactic acidosis, which can be caused by: Severe loss of water from the blood ( dehydration ). Blood … alcohol (methanol), or antifreeze (ethylene glycol). Some medicines, such as isoniazid for tuberculosis or metformin …
Medical tests
… to find germs (such as bacteria or a fungus) that can cause an infection. A sample of stool is added to a … no germs grow, the culture is negative. If germs that can cause infection grow, the culture is positive. The type of … gas. It can also help find the cause of nausea, vomiting, loss of appetite, bloating, belly pain and cramping, and …
Medical tests
… your doctor about all the prescription and non-prescription medicines you are taking. You may be told to stop taking … taken in one day. But the amount of blood taken will not cause significant blood loss or anemia. Risks There is very little chance of having …
Medical tests
… normally low. Testosterone increases during puberty. This causes boys to develop a deeper voice, get bigger muscles, … irregular menstrual periods. See if testosterone-lowering medicines are working in a man with advanced prostate cancer … by an underactive pituitary gland, Addison's disease , loss of ovary function through disease or surgery, and some …
Medical tests
… is causing symptoms, such as chronic diarrhea, weight loss, and weakness. A person with malabsorption syndrome is … from the intestinal tract into the bloodstream. Find the cause of a child's failure to gain weight, especially when … These foods include fruits, jams, jellies, and pastries. Medicines such as aspirin and indomethacin can interfere …
