194 results found
Medical tests
… taking a steroid medicine called dexamethasone changes the levels of the hormone cortisol in the blood. This test … the adrenal glands. After a dose of dexamethasone, cortisol levels often stay very high in people who have Cushing's … syndrome. Sometimes other conditions can keep cortisol levels high during this test. Examples include alcohol use …
Medical tests
… other substances to help balance sodium and potassium levels in the blood and fluid levels in the body, which affects your blood pressure. A … test. In some people, it may be normal to have high blood levels of both renin and aldosterone. If renin levels are …
Medical tests
… is measured to see if the liver is damaged or diseased. Low levels of ALT are normally found in the blood. But when the … it releases ALT into the bloodstream, which makes ALT levels go up. Most increases in ALT levels are caused by liver damage. The ALT test is often …
Medical tests
… done between 15 and 22 weeks, this test checks the levels of four substances in a pregnant woman's blood. The … estriol, or uE3), and the hormone inhibin A. The levels of these substances—along with a woman's age and … done between 15 and 22 weeks, this test checks the levels of four substances in a pregnant woman's blood. The …
Medical tests
… 110–1500 picograms per millilitre (pg/mL) High values High levels of vitamin B12 can occur in liver disease (such as … used to diagnose these problems. In rare cases, high levels may be found in people with diabetes or who are obese . Low values Low levels of vitamin B12 may mean you have vitamin B12 …
Medical tests
… tests Normal: No unexpected drugs are found in the sample. Levels of prescription or non-prescription medicines found … range. Abnormal: Unexpected drugs are found in the sample. Levels of prescription or non-prescription medicines found … or High enough that they may be toxic. High values High levels may be caused by a drug overdose, either by mistake …
Medical tests
… and other substances through the blood. When prealbumin levels are lower than normal, it may be a sign of a poor … are working. Other health problems also may cause your levels to drop. You may need another blood test to be sure that a poor diet is the reason for your low prealbumin levels. Why It Is Done A prealbumin blood test is done to: …
Medical tests
… intestines stick out through the belly wall. Normally, low levels of AFP can be found in the blood of a pregnant woman. … test is often done between 15 and 22 weeks. It checks the levels of four substances in a pregnant woman's blood. They … and a type of estrogen (unconjugated estriol, or uE3). The levels of these substances—along with a woman's age and …
Medical tests
… by a genetic disease that causes very high cholesterol levels. Cholesterol tests and heart attack risk Your cholesterol levels can help your doctor find out your risk for having a … about your cholesterol. Your doctor uses your cholesterol levels plus other things to calculate your risk. These …
Medical tests
… is present in almost all of the tissues in the body and its levels rise in response to cell damage. LDH levels are measured from a sample of blood taken from a vein. Why It Is Done LDH levels help find the cause of lung disease, lymphoma, …
