270 results found
Medical tests
… and treat eye problems. Doctors can see if a disease is getting worse or if treatment is working. You may need … care. Results Retinal imaging Normal: The retina looks healthy. Abnormal: There is a mole, cyst, or some other … in the eye. The layer of nerves called the retinal nerve fibre layer is injured or getting thin. There are changes in …
Medical tests
… Cortisol levels can be affected by many conditions, such as physical or emotional stress, strenuous activity, infection, or injury. Normally, cortisol levels … in the day. If your doctor thinks you may not be making enough, a test is usually done in the morning. Why It Is …
Medical tests
… Prepare To prepare for a thyroid scan: You may need to stop eating for several hours before the test. You may need to … is done. If you are breastfeeding, you may want to pump enough breast milk before the test to get through 1 to 2 … It can also show areas in the thyroid gland where the activity is less than normal (cold nodules ) or more than …
Medical tests
… a deficiency of one of several enzymes needed to convert food to energy. Help determine a cause for otherwise … to fill it with blood. Remove the band from your arm when enough blood is collected. Put a gauze pad or cotton ball … values High values of homocysteine may be caused by: Not getting enough folic acid , vitamin B6, or vitamin B12 in …
Medical tests
… tube that connects your throat to your stomach. It moves food and liquid down to the stomach. Esophagus tests can … when you swallow. This could slow the rate at which food or stomach acid is cleared from the esophagus. Very … that can cause chest pain. Or they can make you feel that food is stuck after you swallow (dysphagia). Why It Is Done …
Medical tests
… glucose, in your blood. Glucose comes from carbohydrate foods . It is the main source of energy used by the body. … the day. Random testing is useful because glucose levels in healthy people do not vary widely throughout the day. Blood … test measures blood sugar exactly 2 hours after you start eating a meal. This test is most often done at home when you …
Medical tests
… destroy cancer cells can also raise potassium levels. Many foods are rich in potassium. Some examples are tomatoes and … prune juice, orange juice, and squash. A balanced diet has enough potassium for the body's needs. But if your levels … destroy cancer cells can also raise potassium levels. Many foods are rich in potassium. Some examples are tomatoes and …
Medical tests
… ACTH test. Your doctor may ask you to eat low-carbohydrate foods for 48 hours before the test. Be sure to ask your … values High levels of ACTH may be caused by: Emotional or physical stress (such as recent surgery or severe pain). … values High levels of ACTH may be caused by: Emotional or physical stress (such as recent surgery or severe pain). …
Medical tests
… doctor see better and are more comfortable for you. Direct fibre-optic (flexible or rigid) laryngoscopy Direct … doctor see better and are more comfortable for you. Direct fibre-optic (flexible or rigid) laryngoscopy Direct …
Medical tests
… of vitamin D, or some kidney or liver diseases. Severe malnutrition or starvation. A condition such as sprue that prevents the intestines from absorbing nutrients properly. Alcohol use disorder . High calcium … of vitamin D, or some kidney or liver diseases. Severe malnutrition or starvation. A condition such as sprue that …
