329 results found
Medical tests
… and it occurs immediately when incompatible blood is transfused. A transfusion reaction can be mild or cause a serious … done to prevent transfusion reactions. Minor antigens (other than A, B, and Rh) that occur on red blood cells can … baby mixes with the blood of an Rh-negative mother during pregnancy or delivery, the mother's immune system …
Medical tests
… of bone marrow fluid through a needle. Bone marrow biopsy uses a needle to take out a small amount of bone with the … the bone marrow. You may feel pressure or some dull pain during the procedure. After the doctor takes the sample, he … and how soon to do it. If you take aspirin or some other blood thinner, ask your doctor if you should stop …
Medical tests
… this nerve pathway or the muscles of the bladder wall can cause bladder dysfunction. During cystometry, your bladder is filled with water to … taken during the test, a contrast material may be used. Another catheter may be placed in your rectum to measure the …
Medical tests
… the gallbladder may not store or empty bile properly. During a HIDA scan, a camera takes pictures of your … pictures of the tracer as it moves along. Your doctor can use these pictures to look for leaks, blockages, or any other problems. Why It Is Done The HIDA scan may be done to: …
Medical tests
… is a type of magnetic resonance imaging (MRI) scan that uses a magnetic field and pulses of radio wave energy to … study. Photographs of selected views can also be made. During MRA, the area of the body being studied is placed … is very powerful. It may affect any metal implants or other medical devices you have. Risks from contrast material …
Medical tests
… see if the hormone is present. HCG is made by the placenta during pregnancy. The test can be used to see if a woman is pregnant. HCG can be found in the … birth defects such as Down syndrome. The test is done with other screening tests. Find and check on the treatment of a …
Medical tests
… by liver damage. The ALT test is often done along with other tests that check for liver damage, including aspartate … liver disease, such as cirrhosis and hepatitis, caused by alcohol, drugs, or viruses. Help check for liver damage. Find out …
Medical tests
… Why It Is Done A ferritin blood test is done to: Find the cause of anemia , especially iron deficiency anemia. See if … also look at your results based on your age, health, and other factors. A value that isn't in the normal range may … (genetic hemochromatosis). Some diseases, including alcohol use disorder , thalassemia , and some types of …
Medical tests
… activities. Ambulatory means that you are able to walk during the test. This type of monitoring may also be called … whether they occur at the same time you have symptoms. Because arrhythmias can come and go, it may be hard to record … test are compared with your medical history, symptoms, and other test results. Your doctor will also compare the …
Medical tests
… (say "NEW-kuhl") translucency screening is a test done during pregnancy. It uses ultrasound to measure the thickness of the fluid … baby (fetus) may be at risk for having Down syndrome or other problems. Learn more Pregnancy: Should I Have …
