294 results found
Medical tests
… can be done on its own or as the second test in a two-part screening for pregnant women. Why It Is Done An OGTT may be … strenuous exercise for at least 8 hours before your first blood sample is taken. (You can drink water before the test.) How It Is Done A blood sample is taken when you arrive for the test. This is …
Medical tests
… Test Overview A hemoglobin electrophoresis test is a blood test done to check the different types of hemoglobin … hemoglobin). This type is normally found in fetuses and newborn babies. Hemoglobin F is replaced by hemoglobin A … hemoglobin). This type is normally found in fetuses and newborn babies. Hemoglobin F is replaced by hemoglobin A …
Medical tests
… Follow your doctor's instructions about eating to avoid low blood sugar. Avoid caffeine within 12 hours of the test. … Follow your doctor's instructions about eating to avoid low blood sugar. Avoid caffeine within 12 hours of the test. …
Medical tests
… for twisting of the spermatic cord . This problem cuts off blood supply to the testicles ( testicular torsion ). Check … ( hydrocele ), fluid in the epididymis (spermatocele), blood in the scrotum (hematocele), or pus in the scrotum … cord. This twisting ( testicular torsion ) cuts off blood supply to the testicles. There is no sign of fluid in …
Medical tests
… measures the amount of prostate-specific antigen in the blood. PSA is released into the blood by the prostate , which is part of the male … system. Healthy people have low amounts of PSA in the blood. The amount of PSA in the blood normally increases as …
Medical tests
… Test Overview A rheumatoid factor (RF) blood test measures the amount of the RF antibody present in … (agglutinate). This method is best used as a first-time screening test for rheumatoid arthritis. Another … as cirrhosis and hepatitis . Infection of the heart ( endocarditis ). Leukemia . A small number of people have a high …
Medical tests
… Test Overview A thyroid-stimulating hormone (TSH) blood test is used to check for thyroid gland problems. TSH … the diagnosis of an underactive thyroid gland in a newborn (congenital hypothyroidism). How To Prepare In … the diagnosis of an underactive thyroid gland in a newborn (congenital hypothyroidism). How To Prepare In …
Medical tests
… is injected into a vein in your arm. It moves through your bloodstream and into certain tissues. These tissues include … and areas that are inflamed or have a buildup of white blood cells . After the tracer builds up in your body, a … of tracer is higher than normal. These areas are called hot spots. It often takes the tracer a few days to build up. So …
Medical tests
… Transthoracic Echocardiogram On this page: Test Overview Why It Is Done How to … chest pains. Check how well your heart is pumping blood. Check to see how well your heart valves are working. Look for blood clots inside your heart. Measure the size and shape of …
Medical tests
… for sodium in the urine is a 24-hour test or a one-time (spot) test that checks for how much sodium is in the urine. … Most of the sodium in the body (about 85%) is found in blood and lymph fluid . Sodium levels in the body are partly … and toothpaste. Doctors may look at sodium levels in the blood and urine to see whether conditions or medicines may …
