329 results found
Medical tests
… This information is about medicines that are not used to control seizures. Why It Is Done Certain types of medicine need to be monitored because: At a low blood level, they don't work as well as they should. At a high blood level, they may cause problems. Your doctor may use your test results to …
Medical tests
… Positron emission tomography (PET) is a test that uses a special type of camera and a tracer (radioactive … (CT) scans or magnetic resonance imaging (MRI) because the pictures show only the location of the tracer. The … about where the tracer is located. A PET scan is often used to evaluate cancer, check blood flow, or see how organs …
Medical tests
… for growth. It plays an important role in how the body uses food for energy ( metabolism ). The amount of GH in the … stress, and diet. Too much GH during childhood can cause a child to grow taller than normal ( gigantism ). Too little GH during childhood can cause a child to grow less than normal ( dwarfism ). Both …
Medical tests
… your throat and esophagus do while you swallow. The test uses X-rays in real time (fluoroscopy) and records what … swallow. A sweet flavour, like chocolate or strawberry, is used to make it easier to drink. Risks The barium in the … thinks you may be at risk for complications, he or she may use a special type of contrast material (Gastrografin) …
Medical tests
… During an ear examination, a tool called an otoscope is used to look at the outer ear canal and eardrum. An otoscope … process to screen newborns for hearing loss. To find the cause of symptoms such as earache, a feeling of pressure or … or the workplace. For an ear examination, the doctor uses a special tool called an otoscope to look into the ear …
Medical tests
… urine. A high level of phosphate in the blood is usually caused by a kidney problem. The amount of phosphate in the … glands, such as the parathyroid glands. The test is also used to find a cause for abnormal vitamin D levels. How To Prepare Tell your …
Medical tests
… Test Overview A salivary gland scan uses a special camera and a tracer (radioactive chemical) to … the salivary glands . This can help your doctor find the cause of dry mouth ( xerostomia ) or swelling in the salivary … Why It Is Done A salivary gland scan is done to: Find the cause of swelling in the major salivary glands. Swelling may …
Medical tests
… liver and spleen. In the bone marrow, iron is stored and used as needed to make new red blood cells. The source of … thing in the morning. How It Is Done A health professional uses a needle to take a blood sample, usually from the arm. … normal. Your lab report should show the range that your lab uses for each test. The normal range is just a guide. Your …
Medical tests
… tolerance test (OGTT) measures the body's ability to use a type of sugar, called glucose, that is the body's main source of energy. An OGTT can be used to diagnose prediabetes and diabetes . An OGTT is most … taken in one day. But the amount of blood taken will not cause significant blood loss or anemia. Risks There is very …
Medical tests
… checked for glaucoma. Glaucoma is an eye disease that can cause blindness by damaging the optic nerve . If you have … help control glaucoma. Check for birth defects that may cause glaucoma. How To Prepare If you wear contact lenses, … back in for 1 hour after the test or until the medicine used to numb your eye wears off. If your eyes might be …
