329 results found
Medical tests
… doctor can also see other structures in the eye. The doctor uses a magnifying tool called an ophthalmoscope and a light … are two types of ophthalmoscopy. Direct ophthalmoscopy. Your doctor uses a tool that is about the size of a small … can magnify up to about 15 times. Indirect ophthalmoscopy. Your doctor uses a small hand-held lens and either a slit …
Medical tests
… Why It Is Done The carcinoembryonic antigen (CEA) test is used to monitor a person before and during treatment. Along … there's nothing you have to do before this test, unless your doctor tells you to. How It Is Done A health … Normal Each lab has a different range for what's normal. Your lab report should show the range that your lab uses for …
Medical tests
… as the prostate enlarges with age. PSA may increase because of inflammation of the prostate ( prostatitis ) or … (PSA) test is done to: Screen for prostate cancer. If your PSA level is higher than expected, your doctor may suggest other tests, including a prostate …
Medical tests
… (sugar bound to hemoglobin) than normal. An A1c test can be used to diagnose prediabetes or diabetes. The A1c test … is in the plasma part of blood. This test shows how well your diabetes has been managed in the last 2 to 3 months and whether your diabetes treatment plan needs to be changed. This test …
Medical tests
… page: Test Overview Test Overview Radioactive tracers are used in imaging tests that help find problems inside the … the benefits of the test. Most of the tracer will leave your body through your urine or stool within a day. So be sure to flush the …
Medical tests
… Test Overview An echocardiogram (also called an echo) uses sound waves to make an image of your heart. A device called a transducer is moved across your chest. It looks like a microphone. The transducer sends …
Medical tests
… Results Test Overview A thyroid scan uses a radioactive tracer and a special camera to measure … or can be injected into a vein. It travels through your body, giving off radiation signals. The camera "sees" … medicines or supplements for a while before the test. Tell your doctor about all of the medicines and natural health …
Medical tests
… Overview Magnetic resonance imaging (MRI) is a test that uses a magnetic field and pulses of radio wave energy to … tomography (CT) scan . For an MRI of the head, you lie with your head inside a special machine (scanner) that has a … there's nothing you have to do before this test, unless your doctor tells you to. Tell your doctor if you get …
Medical tests
… Overview A HIDA scan is an imaging test that checks how your gallbladder is working. The gallbladder is a small sac under your liver. It stores bile, a fluid that helps your body … pictures of the tracer as it moves along. Your doctor can use these pictures to look for leaks, blockages, or any …
Medical tests
… Test Overview The slit lamp examination uses a tool that provides a magnified, three-dimensional … view of the parts of the eye . During the examination, your doctor can look at the front parts of the eye. These … lamp examination. Eyedrops may be used to widen (dilate) your pupils and to numb the surface of your eyes. Before the …
