329 results found
Medical tests
… a camera takes pictures of your gallbladder after a radioactive tracer is injected into a vein in your arm. The … of your clothes. This depends on which part of your body is being examined. You may be allowed to keep on your underwear … not produce any radiation. So you are not exposed to any more radiation while the scan is being done. A substance …
Medical tests
… scan, blood is taken from you, and a small amount of radioactive material called technetium is added to the blood. The blood with the technetium is then injected back into your bloodstream. Red blood cells with the technetium … accumulates. This method of finding bleeding is sometimes more effective than angiography. The technetium-labelled red …
Medical tests
… Cortisol levels can be affected by many things, such as physical or emotional stress, strenuous activity, infection, or injury. Normally, cortisol levels … have this daily change in cortisol levels, you may have overactive adrenal glands. Cortisol levels vary widely …
Medical tests
… Prepare To prepare for a thyroid scan: You may need to stop eating for several hours before the test. You may need to … to eat a low-iodine diet for several days if this test is being done to check for thyroid cancer. For a thyroid scan, … It can also show areas in the thyroid gland where the activity is less than normal (cold nodules ) or more than …
Medical tests
… colonography . Which screening test you choose depends on your risk, your preference, and your doctor. Talk to your … in the stool, since cancer and polyps in the colon are more likely to bleed than normal colon tissue. If blood is … the stool tests during your menstrual period or if you have active bleeding from hemorrhoids. Also, don't test a stool …
Medical tests
… ECG) is a test that checks for problems with the electrical activity of your heart. An EKG shows the heart's electrical … your body from the machine, and there is no danger of getting an electrical shock. Results The doctor will look at … be looked at along with your symptoms, past health, and a physical examination. Ambulatory …
Medical tests
… lifted slightly with a finger or instrument inserted into your vagina while the bladder stress is applied. This checks … to see if incontinence is the result of the bladder neck being pushed down too far by the stress. While you are lying … It Is Done The bladder stress test may be done as part of a physical examination when: You have involuntary release of …
Medical tests
… connect these to an EKG machine that records the electrical activity of your heart on paper. The EKG records when your … is small. There is a risk of damage to cells or tissue from being exposed to radiation, including the small amounts used … and other health problems. But in most cases, the risk of getting cancer from being exposed to small amounts of …
Medical tests
… vessel, nerve, or psychological issues. To find the cause, your doctor will first ask about your sexual history and do a physical examination . During this examination, the doctor … erection. If the medicine doesn't help, then you may need more tests. This topic focuses on three more tests you may …
Medical tests
… time (PTT) is a blood test that measures the time it takes your blood to clot. A PTT test can be used to check for … may be used to find out if the right dose of heparin is being used. Low levels of blood clotting factors. A change in the activity of any of the clotting factors. The absence of any …
