265 results found
Medical tests
… the amount of luteinizing hormone (LH) in a sample of blood or urine. LH is produced by the pituitary gland . LH … you take, including natural health products. How It Is Done Blood test A health professional uses a needle to take a blood sample, usually from an arm. The blood sample is then …
Medical tests
… who has syphilis during pregnancy. Testing is done on blood, body fluid, or tissue samples. If a first screening … Why It Is Done A syphilis infection can spread through the bloodstream to all parts of the body. If not treated, … How It Is Done A syphilis test may be done on a sample of blood, sore, skin, or spinal fluid, depending on which type …
Medical tests
… or trisomy 18 . First-trimester screening tests include: Blood tests. These measure the level of two substances in the blood called pregnancy-associated plasma protein A (PAPP-A) … gonadotropin hormone (beta-hCG). PAPP-A is a protein in the blood. Beta-hCG is a hormone made by the placenta . In some …
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
… (low pH ) or alkalinity (high pH) of the semen. White blood cell count. White blood cells are not usually present in semen. Why It Is Done … how well they can move or can penetrate an egg. White blood cell count. A high number of white blood cells and …
Medical tests
… tests are done to find certain antibodies that attack red blood cells. Antibodies are proteins made by the immune … cause antibodies to be made. Transfusion reaction Human blood is typed by certain markers (called antigens ) on the surface of red blood cells . If you get a blood transfusion, the transfused …
Medical tests
… ultrasound test uses reflected sound waves to see how blood flows through a blood vessel. It helps doctors assess the blood flow through major arteries and veins, such as those …
Medical tests
… dye and camera ( fluoroscopy ) to take pictures of the blood flow in the blood vessels of the head and neck . An angiogram of the … the veins or the four arteries (four-vessel study) carrying blood to the brain. During an angiogram, a thin, soft tube …
Medical tests
… Test Overview A reticulocyte count is a blood test that measures how fast red blood cells called reticulocytes are made by the bone marrow and released into the blood. Reticulocytes are in the blood for about 2 days …
Medical tests
… Overview A glycohemoglobin test, or hemoglobin A1c, is a blood test that checks the amount of sugar (glucose) bound to the hemoglobin in the red blood cells. People who have diabetes or other conditions that increase their blood glucose levels have more glycohemoglobin (sugar bound …
