322 results found
Medical tests
… levels vary throughout the day. They are usually highest in the morning and lowest in the evening. Why It Is … sexual problems. Having a low level of testosterone may lower a man's sex drive or not allow him to have an erection … there's nothing you have to do before this test, unless your doctor tells you to. Your doctor may want you to do a …
Medical tests
… make less cortisol. Dexamethasone, which is like cortisol, lowers the amount of ACTH released by the pituitary gland. … a dose of dexamethasone, cortisol levels often stay very high in people who have Cushing's syndrome. Sometimes other … dexamethasone pill. The next morning, the cortisol level in your blood will be measured. If your cortisol level stays …
Medical tests
… women for gestational diabetes. How To Prepare Tell your doctor about all the prescription and non-prescription … strenuous exercise for at least 8 hours before your first blood sample is taken. (You can drink water before the … that isn't in the normal range may still be normal for you. High values High glucose levels may be caused by: Diabetes. …
Medical tests
… test ("tox screen") checks for drugs or other chemicals in your blood, urine, or saliva. Drugs can be swallowed, inhaled, … (therapeutic) range, or Above the therapeutic range, or High enough that they may be toxic. High values High levels …
Medical tests
… test measures the amount of this enzyme in a sample of blood taken from a vein or in a sample of urine. Normally, … for only a short time. In the urine, amylase may remain high for several days. Why It Is Done A test for amylase is … you produce over a 24-hour period. You start collecting your urine in the morning. When you first get up, empty your …
Medical tests
… Anoscopy, proctoscopy, and sigmoidoscopy tests allow your doctor to look at the inner lining of your anus, your rectum, and the lower part of the large intestine (colon). These tests are … from the rectum, long-lasting diarrhea or constipation, blood or pus in the stool, or lower abdominal pain. Remove …
Medical tests
… (hCG) test is done to check for the hormone hCG in blood or urine. Some hCG tests measure the exact amount. … hCG goes up early in pregnancy can give information about your pregnancy and the health of your baby. Soon after … that isn't in the normal range may still be normal for you. High values If you are pregnant, very high levels of hCG can …
Medical tests
… done. Areas of the kidneys where the tracer shows up in higher-than-normal amounts, such as in some types of cancer, … The radioactive tracer used in this test can get into your breast milk and is not good for the baby. How It Is … damage is very low compared with the benefits of the test. Steps you can take Most of the tracer will leave your body …
Medical tests
… Test Overview A breast self-examination involves checking your breasts for lumps or changes. Many breast problems are … on the other breast, both breasts are probably normal. Next steps After you know what your breasts normally look and … increase in the size of one breast. One breast unusually lower than the other. Remember that most breast problems or …
Medical tests
… of ferritin in the blood shows how much iron is stored in your body. Why It Is Done A ferritin blood test is done to: … ) is present. Check to see if iron treatment to raise or lower the iron level is working. How To Prepare In general, … that isn't in the normal range may still be normal for you. High values Very high ferritin levels can mean a large …
