329 results found
Medical tests
… are two types of ophthalmoscopy. Direct ophthalmoscopy. Your doctor uses a tool that is about the size of a small … glaucoma. How To Prepare In general, there's nothing you have to do before this test, unless your doctor tells you … this test. If the test is painful, let the doctor know. When dilating eyedrops are used Dilating drops may make your …
Medical tests
… Test Overview A ketone test checks for ketones in your blood or urine. Ketones are substances that are made when the body breaks down fat for energy. Normally, your … often happen with high blood sugar and may mean you have diabetic ketoacidosis , a potentially life-threatening …
Medical tests
… tracer liquid is put into a vein (intravenous, or IV ) in your arm. The tracer moves through your body, where much of … done to remove a tumour. Help diagnose Alzheimer's disease when the symptoms are not clear or when a person has … Positron Emission Tomography (PET)—HowToPrepare Before you have a PET scan, tell your doctor if: You have diabetes. If …
Medical tests
… , colonoscopy , and CT colonography . Which screening test you choose depends on your risk, your preference, and your … With the gFOBT, you will be given instructions about foods to avoid in the days before the test. Some medicines … a special diet in the days before you take the test. When the test is done, follow the instructions to return the …
Medical tests
… This is called sensitivity testing. Depending on what your stool is being tested for, you may only need to collect … that are causing infections or diseases. These include food-borne illness , inflammation of the large intestine … your hands and use careful handling techniques to avoid spreading infection. Results Stool culture Normal: No …
Medical tests
… in the brain caused by too much CSF. How To Prepare Tell your doctor ALL the medicines and natural health products … skin. Then a long, thin needle is put in the spinal canal. When the needle is in place, the solid central core of the … while you are lying down. Your doctor takes the pressure reading, called the opening pressure, and checks whether the …
Medical tests
… material , fluoroscopy , and X-ray . Before the test, you drink a mix of barium (barium contrast material) and … symptoms, such as trouble swallowing, vomiting, burping up food, belly pain (including a burning or gnawing pain in the … series of X-rays that follow. The radiologist will tell you when and how much to drink. By the end of the test, you may …
Medical tests
… is normally found in the blood and filtered by the kidneys. When the kidneys are working as they should, there may be a … At a random time. This is usually after the first time you urinate in the morning. Over a 24-hour period. Over a … failure, and cirrhosis. The sooner your doctor knows you have kidney damage, the more your doctor can do to protect …
Medical tests
… substance called a tracer is injected into a vein in your arm. The tracer travels through your bloodstream and … breast milk and is not good for the baby. You probably will have to wait 1 to 3 hours after the tracer is injected … How It Feels You may feel nothing at all from the needle when the tracer is injected, or you may feel a brief sting …
Medical tests
… deficiency anemia unless their bodies can't absorb it from food. Strict vegetarians (vegans) who do not eat animal … water) for 10 to 12 hours before the test. How It Is Done Your health professional drawing blood will: Wrap an elastic … needle to fill it with blood. Remove the band from your arm when enough blood is collected. Put a gauze pad or cotton …
