329 results found
Medical tests
… levels of both renin and aldosterone are normally present when the body is trying to conserve fluid and salt (sodium). When a tumour that makes aldosterone is present, your … level will be low. Usually a renin activity test is done when the aldosterone level is measured. Why It Is Done An …
Medical tests
… antibody syndrome or lupus anticoagulant syndrome develop when the immune system makes antibodies that attack blood … done for this purpose, an APTT may be done every few hours. When the correct dose of medicine is found, you will not … to take a blood sample, usually from the arm. How It Feels When a blood sample is taken, you may feel nothing at all …
Medical tests
… such as transferrin or ferritin, or stored in body tissues. When red blood cells die, their iron is released and carried … for pregnancy, during breastfeeding, or at times when there are low levels of iron in the body (such as after … to take a blood sample, usually from the arm. How It Feels When a blood sample is taken, you may feel nothing at all …
Medical tests
… good at keeping its temperature within a safe range, even when temperatures outside the body change a lot. When you are too hot, the blood vessels in your skin widen … to sweat. As the sweat evaporates, it helps cool your body. When you are too cold, your blood vessels narrow. This …
Medical tests
… release of urine ( urinary incontinence ) that may occur when you cough, sneeze, laugh, or exercise. A Bonney test is … through the urethra . A slight burning sensation may occur when the catheter is inserted. If your bladder is already … stress test may be done as part of a physical examination when: You have involuntary release of urine when you sneeze, …
Medical tests
… response or potential (VER or VEP). This response occurs when the eyes are stimulated by looking at a test pattern. … evoked response or potential (ABER or ABEP). This occurs when hearing is stimulated by listening to a test tone. … evoked response or potential (SSER or SSEP). This occurs when the nerves of the arms and legs are stimulated by an …
Medical tests
… system attacks and destroys the body's normal tissues. When a person has an autoimmune disease, the immune system … test takes The test will take several minutes. How It Feels When a blood sample is taken, you may feel nothing at all … is very little chance of having a problem from this test. When a blood sample is taken, a small bruise may form at the …
Medical tests
… is a blood test that measures a substance that is released when a blood clot breaks up. Doctors order the d-dimer test, … is working. Why It Is Done Doctors use the d-dimer test when a person might have a dangerous blood-clotting problem. … to take a blood sample, usually from the arm. How It Feels When a blood sample is taken, you may feel nothing at all …
Medical tests
… ( RNA ) of HIV in the blood. Viral load is first measured when you are diagnosed with HIV infection. This first … the amount of the virus is too low for the test to detect. When the virus is undetectable, you cannot pass HIV to other … to take a blood sample, usually from the arm. How It Feels When a blood sample is taken, you may feel nothing at all …
Medical tests
… Your pulse changes from minute to minute. It will be faster when you exercise, have a fever, or are under stress. It will be slower when you are resting. Why It Is Done Your pulse is checked … of breath. Check for blood flow after an injury or when a blood vessel may be blocked. Check on medicines or …
