329 results found
Medical tests
… Low levels of ALT are normally found in the blood. But when the liver is damaged or diseased, it releases ALT into … that can damage the liver. How To Prepare Avoid strenuous exercise just before having an ALT test. How It Is Done A … High levels of ALT may be caused by: Liver damage from conditions such as hepatitis or cirrhosis . Lead poisoning. …
Medical tests
… Test Overview A ketone test checks for ketones in your blood or urine. Ketones are substances that are made when the body breaks down fat for energy. Normally, your … of ketones, may be important to your doctor as well. Many conditions can change ketone levels. Fasting usually causes …
Medical tests
… gland controls the level of testosterone in the body. When the testosterone level is low, the pituitary gland … See whether a high level of testosterone is causing a boy younger than age 10 to have early signs of puberty. Find out … with the pituitary gland , or many long-term (chronic) illnesses. A low testosterone level in men can also be …
Medical tests
… GH in the blood changes during the day and is affected by exercise, sleep, emotional stress, and diet. Too much GH … cause a child to grow less than normal ( dwarfism ). Both conditions can be treated if found early. In adults, too … One of these is insulin -like growth factor 1 (IGF-1). When the GH level is very high, the IGF-1 level is also very …
Medical tests
… and viruses, and cause them to be destroyed. The following conditions cause antibodies to be made. Transfusion reaction … (called antigens ) on the surface of red blood cells . If you get a blood transfusion, the transfused blood must match … the father has Rh-positive blood. Rh sensitization happens when the baby's blood mixes with the mother's blood during …
Medical tests
… Another substance, creatine (say "KREE-uh-teen"), is formed when food is changed into energy through a process called … How To Prepare You may be asked to: Not do any strenuous exercise for 2 days (48 hours) before having the tests. Not … blood flow to the kidneys. Dehydration . Muscle injury and conditions. These include crush injuries, burns, …
Medical tests
… is normally found in the blood and filtered by the kidneys. When the kidneys are working as they should, there may be a … caused by kidney damage from diabetes . But many other conditions can lead to kidney damage. These include high … can do to protect your kidneys. How To Prepare Do not exercise just before the test. Tell your doctor if you are …
Medical tests
… a testicular scan, the tracer is injected into a vein in your arm. It travels through your blood to the testicles. … torsion . Get medical care and treatment right away if you have this problem. Testicular ultrasound has largely … Feels You may feel nothing at all from the needle puncture when the tracer is injected. Or you may feel a brief sting …
Medical tests
… because its symptoms are similar to those of many other illnesses. If you and your doctor think you have Lyme disease, your doctor will do a careful medical history and physical examination. Antibody tests can sometimes … with the heart, brain, or nerves. Testing is most accurate when you have risk factors for Lyme disease or symptoms of …
Medical tests
… for a few hours before the test. If testing will include exercise, you should wear comfortable shoes and clothing. … Feels You may feel nothing at all from the needle puncture when the tracer is injected, or you may feel a brief sting … The walls of the ventricles are contracting normally. Many conditions can affect cardiac blood pool scan results. Your …
