329 results found
Medical tests
… lab. But they also can be done with portable equipment you use at home. Common sleep studies The most common sleep … If your doctor thinks that you may have shift work sleep disorder or another problem with your body's internal clock … seizures). Ongoing problems that have not responded to treatment. How To Prepare You may be asked to keep a sleep …
Medical tests
… Overview A thyroid-stimulating hormone (TSH) blood test is used to check for thyroid gland problems. TSH is produced when the hypothalamus releases a substance called thyrotropin-releasing hormone (TRH). TRH … the pituitary gland or the hypothalamus). Keep track of treatment with thyroid replacement medicine for people who …
Medical tests
… Test Overview A rapid sputum tests is used to diagnose tuberculosis (TB) when other tests show … can cause an infection. A sample of sputum is added to a substance that promotes the growth of bacteria. If no … may have TB has been close to other people who will need treatment if they have been exposed. …
Medical tests
… blood varies throughout her menstrual cycle . After menopause , it drops to a very low but constant level. Estriol … 15 and 22 weeks of pregnancy. It checks the levels of four substances in a pregnant woman's blood. They are the hormone … tumours growing in the testicles. Monitor treatment with fertility medicines. Learn more Pregnancy: …
Medical tests
… for colour, blood cell counts, protein, glucose, and other substances. Some of the sample may be put into a container … procedure. Why It Is Done A spinal tap is done to: Find a cause for symptoms possibly caused by an infection (such as … in people who have multiple sclerosis , immune system disorders, or bacterial and viral infections. Glucose: Low …
Medical tests
… can include infection (such as from parasites , viruses , or bacteria ), poor nutrient absorption, or cancer. … bile , white blood cells , and sugars called reducing substances. The pH of the stool also may be measured. A … , sprue (celiac disease) , cystic fibrosis , or other disorders that affect the absorption of fats. The presence …
Medical tests
… your throat and esophagus do while you swallow. The test uses X-rays in real time (fluoroscopy) and records what … a swallowing study, you will swallow liquid mixed with a substance called barium. Or you might swallow solid foods … your doctor see why you're having trouble swallowing. After treatment, it can also show your doctor if the treatment …
Medical tests
… anemia . Mild folate deficiency often does not cause any symptoms. Severe folate deficiency may cause a sore … or problems absorbing (malabsorption) folate. See if treatment for folate deficiency or vitamin B12 deficiency is … can't eat very much food, such as people with alcohol use disorder , certain cancers, or an eating disorder. Related …
Medical tests
… A (Hex A) in the blood. Hex A breaks down fatty substances in the brain and nerves. Tay-Sachs is an … inherited disease in which the body can't break down fatty substances as it should, so the fatty substances collect in … the results may mean. How It Is Done A health professional uses a needle to take a blood sample, usually from the arm. …
Medical tests
… test also looks at other cells in the retina. It may be used to check for problems such as: Retina damage from drugs or other substances. Loss of central or peripheral vision from retina … retina problems, such as vitamin A deficiency or metabolic disorders. A multifocal ERG (mfERG) tests the electrical …
