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 … How To Prepare An aldosterone test is often done at the time of a routine blood test. You don't need to do anything …
Medical tests
… people who smoke tend to have higher health costs over time. One type of test can help tell the difference between … a lot of second-hand smoke. If you no longer smoke but are using a quit-smoking aid like gum or a patch, your test … show that you are using quit-smoking aids and not tobacco. When you stop using nicotine, it can take more than 2 weeks …
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 … in the refrigerator. Empty your bladder for the last time at or just before the end of the 24-hour period. Add …
Medical tests
… the levels of calcium and phosphorus in your blood. When the phosphorus level is measured, a vitamin D level, and sometimes a PTH level, is measured at the same time. Vitamin D … This test will take a few minutes. How It Feels Blood test When a blood sample is taken, you may feel nothing at all …
Medical tests
… is made by the adrenal glands . Cortisol levels go up when the pituitary gland releases another hormone called … such as steroids, can affect cortisol levels for some time even after you stop taking the medicine. How It Is Done … 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
… into the skin. An intradermal allergy test may be done when a substance does not cause a reaction in the skin prick … that may prevent or reduce a reaction to a substance even when a person is allergic to the substance. Has had a severe … apart. This allows many substances to be tested at the same time. Prick the skin under each drop with a needle. The …
Medical tests
… Some medicines may also need to be stopped for a brief time before the test. Don't do the stool tests during your … a special diet in the days before you take the test. When the test is done, follow the instructions to return the … or taking aspirin. Stool test results that are positive when you don't have cancer are called false-positive test …
Medical tests
… Another substance, creatine (say "KREE-uh-teen"), is formed when food is changed into energy through a process called … amount of urea in your blood. Urea is a waste product made when protein is broken down in your body. Urea is made in … uses a needle to take a blood sample, usually from the arm. Timed urine test You collect your urine for a period of …
Medical tests
… between the heart and other structures in the chest when the heart beats. Some diseases cause fluid to collect … may be saved and sent to a lab for tests. At different times during the procedure, you may be asked to hold your … few hours. How It Feels You will feel a brief stinging pain when the local anesthetic is injected. When the needle is …
Medical tests
… filled your uterus with liquid, most of it will flow out when the scope is removed. You will most likely go home the … Prepare Preparing for the procedure Schedule your test for when you won't be having your period. Your doctor may … inside of your uterus better. It also avoids doing the test when you could be pregnant. Your doctor may give you …
