329 results found
Medical tests
… (PTH) regulates the levels of calcium and phosphorus in your blood. When the phosphorus level is measured, a vitamin D level, … Done This test may be done to check phosphate levels if you have kidney disease or bone disease. It helps find problems …
Medical tests
… from metabolism . The blood carries carbon dioxide to your lungs, where it is exhaled. More than 90% of it in your … conditions. How To Prepare In general, there's nothing you have to do before this test, unless your doctor tells you … test takes The test will take a few minutes. How It Feels When a blood sample is taken, you may feel nothing at all …
Medical tests
… 24 hours. Uric acid is made from the natural breakdown of your body's cells. It's also made from the foods you eat. Your kidneys take uric acid out of your blood … period. You start collecting your urine in the morning. When you first get up, empty your bladder. But do not save …
Medical tests
… urine sample. A 24-hour urine sample is all of the urine you produce over a 24-hour period. You start collecting your urine in the morning. When you first get up, empty your bladder, but don't save … health professional recommends. How It Feels Blood test When a blood sample is taken, you may feel nothing at all …
Medical tests
… or can be injected into a vein. It travels through your body, giving off radiation signals. The camera "sees" … scan, a whole-body thyroid scan, may be done for people who have had thyroid cancer that has been treated. The … given technetium in a vein ( intravenously ) in your arm. When and how you take the radioactive tracer depends on …
Medical tests
… a testicular scan, the tracer is injected into a vein in your arm. It travels through your blood to the testicles. … torsion . Get medical care and treatment right away if you have this problem. Testicular ultrasound has largely … Feels You may feel nothing at all from the needle puncture when the tracer is injected. Or you may feel a brief sting …
Medical tests
… : Blood antibody test. A blood test checks to see whether your body has made antibodies to H. pylori bacteria. If you have antibodies to H. pylori in your blood, it means you … from the arm. Urea breath test A breath sample is collected when you blow into a balloon or blow bubbles into a bottle …
Medical tests
… glands then make a hormone called cortisol, which helps your body manage stress. Cortisol is needed for life, so its levels in the blood are closely controlled. When cortisol levels rise, ACTH levels normally fall. When … ACTH test. Your doctor may ask you to eat low-carbohydrate foods for 48 hours before the test. Be sure to ask your …
Medical tests
… blood of a pregnant woman can help see whether the baby may have such problems as spina bifida and anencephaly . An AFP … Screening tests are used to see what the chance is that your baby has a certain birth defect. If a screening test is … 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
… to make magnified images, or pictures, of the back of your eye . This includes the retina. It's the part of the … treatment is working. You may need retinal imaging if: You have diabetes or diabetic retinopathy . These conditions can lead …
