304 results found
Medical tests
… located. A PET scan is often used to evaluate cancer, check blood flow, or see how organs are working. Why It Is Done … attack . Brain: Areas of increased glucose metabolism or lower oxygen use and blood flow may mean you have epilepsy . … attack . Brain: Areas of increased glucose metabolism or lower oxygen use and blood flow may mean you have epilepsy . …
Medical tests
… tissue from the body. A karyotype test usually is done on a blood sample taken from a vein. For testing during … be done on a sample of amniotic fluid or the placenta . Blood sample from a vein A health professional uses a needle to take a blood sample, usually from an arm. Cell sample from a fetus …
Medical tests
… Test Overview A C-reactive protein (CRP) test is a blood test that measures the amount of a protein called … measures general levels of inflammation in your body. High levels of CRP are caused by infections and many … for you. Results are usually available within 24 hours. High levels of CRP are caused by infections and many …
Medical tests
… The pictures let your doctor check the health of the lower chambers of your heart, called ventricles. This test … You get an injection of a radioactive tracer into your blood. Then your doctor uses a special camera to see how … The pictures let your doctor check the health of the lower chambers of your heart, called ventricles. This test …
Medical tests
… . A test for DHEA-S checks the level of this hormone in the blood. Testosterone affects sexual features and development. … because that is when the amount of DHEA-S is at its highest. Women may be asked to take the test at a certain … because that is when the amount of DHEA-S is at its highest. Women may be asked to take the test at a certain …
Medical tests
… Most of the sodium in the body (about 85%) is found in blood and lymph fluid . Sodium levels in the body are partly … or electrolyte imbalances. Urine sodium levels are often high when blood levels are low. The urine sodium level is often low when blood levels are high. Urine sodium levels are affected by medicines and …
Medical tests
… Test Overview A tissue type test is a blood test that identifies substances called antigens on the … a close relative of the person. Find people who may have a high chance of certain autoimmune diseases. How To Prepare … medical history—such as a history of cancer, infections, high-risk behaviours, use of drugs, exposure to toxins, and …
Medical tests
… Test Overview A breath alcohol test is an estimate of your blood alcohol concentration (BAC). The test measures the … quickly. The amount of alcohol in your blood reaches its highest level about 60 minutes after you drink. But food in … starting at levels as low as 0.05. Legal limits are set lower for drivers who are not fully licensed. How It Is Done …
Medical tests
… A magnesium test checks the level of magnesium in the blood. Magnesium is an important electrolyte needed for … Only a tiny amount of magnesium is normally present in the blood. Tests for other electrolytes, such as calcium, … weakness. Find the cause of symptoms such as low blood pressure, nausea, vomiting, diarrhea, dizziness, muscle …
Medical tests
… as brain activity, eye movement, oxygen and carbon dioxide blood levels, heart rate and rhythm, breathing rate and … brain activity, eye movement, oxygen and carbon dioxide blood levels, heart rate and rhythm, breathing rate and … a mask that's connected to a continuous positive airway pressure (CPAP) machine. The mask fits over your nose or …
