329 results found
Medical tests
… different functions of the eye. Some of the tests measure your ability to see details at near and far distances, check … errors, such as nearsightedness or farsightedness , occur when light rays entering the eye can't focus exactly on the … only detect a problem. More testing is needed to identify what is causing the problem. Why It Is Done Visual acuity …
Medical tests
… the blood (such as electrolytes ). A chemistry screen tells your doctor about your general health, helps look for … The type of chemistry screen you have done depends on what information your doctor is looking for. A chemistry … to take a blood sample, usually from the arm. How It Feels When a blood sample is taken, you may feel nothing at all …
Medical tests
… for the proteins troponin I (TnI) and troponin T (TnT). If your heart muscle is injured, such as from a heart attack , … in other body tissues, their levels in the blood may rise when those other tissues are damaged. Cardiac enzyme studies … the need for the test, its risks, how it will be done, or what the results will mean. How It Is Done A health …
Medical tests
… recent infection, find out if an HIV infection is present when antibody test results were uncertain, and screen blood … the point of care (POC) to screen for HIV antibodies. If you have a positive test result, contact your sex partners … before and after the test to discuss: How the test is done, what the results mean, and any other tests that may be done. …
Medical tests
… the amount of a protein called C-reactive protein in your blood. C-reactive protein measures general levels of … a CRP test cannot show where the inflammation is located or what is causing it. Other tests are needed to find the cause … test takes The test will take a few minutes. How It Feels When a blood sample is taken, you may feel nothing at all …
Medical tests
… cells of the brain and damage them. Tay-Sachs can occur when parents pass on a changed gene to their child. If the … amniocentesis or chorionic villus sampling. How To Prepare You do not need to do anything before having this test. If … the need for the test, its risks, how it will be done, or what the results may mean. How It Is Done A health …
Medical tests
… who have one autoimmune disease may get another one. Tell your doctor if you have any new or worse symptoms. These … to take a blood sample, usually from the arm. How It Feels When a blood sample is taken, you may feel nothing at all … at the site. Results Each lab has a different range for what's normal. Your lab report should show the range that …
Medical tests
… a test that measures and records the electrical activity of your brain. Special sensors called electrodes are attached … Is Done An EEG may be done to: Check for epilepsy and see what type of seizures are occurring. EEG is the most useful … used (which is rare), you will feel a brief, sharp prick when each electrode is put in. It will feel kind of like …
Medical tests
… test is not usually used to find testicular cancer . If your doctor thinks you may have cancer, you will probably … blood thinners.) Make sure that you understand exactly what your doctor wants you to do. Tell your doctor ALL the … 15 to 20 minutes. How It Feels You will feel a brief sting when the IV line is put in or when the local anesthetic is …
Medical tests
… are usually done together. They are: Ventilation scan. You inhale a radioactive tracer gas or mist. Pictures from … scan. A radioactive tracer is injected into a vein in your arm. It travels through your blood and into the lungs. … scans will match. If the scan results don't match, you may have a blood clot in the lung. Ventilation and perfusion …
