271 results found
Medical tests
… make your BUN level higher. Liver disease or damage can lower your BUN level. A low BUN level can occur normally in the second or third … BUN-to-creatinine ratio. Kidney disease or blockage of the flow of urine from your kidney causes both BUN and creatinine …
Medical tests
… at the site. Some people's blood glucose levels drop very low toward the end of the test. But some people feel like their sugar levels are low, when their levels actually are not low. Symptoms of low blood glucose include weakness, hunger, …
Medical tests
… aldosterone level will be high while a renin level will be low. Usually a renin activity test is done when the … adrenal glands. Find the cause of high blood pressure or low blood potassium levels. This is done when overactive … before having routine blood tests. If you are having follow-up aldosterone blood tests, your doctor may give you the …
Medical tests
… transducer sends sound waves that echo off your heart and back to the transducer. These echoes are turned into moving … Check for coronary artery disease, which can reduce blood flow to the heart muscle during stress. Look at the heart … 30 to 60 minutes. How It Feels You may have a brief, sharp pain when the intravenous (IV) needle is placed in a vein in …
Medical tests
… of bilirubin in a blood sample. Bilirubin is a brownish yellow substance found in bile . It is produced when the liver … are high, the skin and whites of the eyes may look yellow (jaundice). Jaundice may be caused by liver disease ( … How It Feels Blood sample from a heel stick A brief pain, like a sting or a pinch, is usually felt when the …
Medical tests
… levels of both renin and aldosterone. If renin levels are low and aldosterone levels are high, a tumour may be present … especially when potassium levels in the blood are low. How To Prepare For 2 to 4 weeks before the test, you … For 3 days before a renin test, you may be asked to follow a special low-sodium diet. You may be asked to not eat …
Medical tests
… of skin or lips (labia) apart. Wipe the area from front to back. If you have a penis, use the wipes to clean the tip. … your skin away from the urine stream. After the urine has flowed for several seconds, place the collection container in … hands. How It Feels This test usually doesn't cause any pain or discomfort. Risks There are no known risks from …
Medical tests
… check for: The cause of arm or leg numbness, weakness, or pain. Narrowing of the spinal canal (spinal stenosis). A … increase the amount of water you drink before the test. Follow the instructions your doctor gives you about eating and … on an X-ray table. The doctor cleans an area on your lower back. A numbing medicine is put into your skin. After the …
Medical tests
… including laxatives, aspirin, mouthwash, and toothpaste. Low sodium levels have many causes, such as heart failure, … minerals in the body. Find the cause of symptoms from low or high levels of sodium. Check on the progress of … levels of the hormone aldosterone (hyperaldosteronism). Low levels Low sodium levels (hyponatremia) can be caused by …
Medical tests
… is an examination that lets your doctor look at the back of your throat, your voice box (larynx) , and vocal … weak voice, or no voice. Find the cause of throat and ear pain. Find the cause for trouble swallowing, a feeling of a lump in the throat, or mucus with …
