248 results found
Medical tests
… cortisol levels change throughout the day. ACTH is normally highest in the early morning (between 6 a.m. and 8 a.m.) and … ACTH test. Your doctor may ask you to eat low-carbohydrate foods for 48 hours before the test. Be sure to ask your … values High levels of ACTH may be caused by: Emotional or physical stress (such as recent surgery or severe pain). …
Medical tests
… sodium are also lost through the skin when you sweat. Most foods have sodium naturally in them or as an ingredient in … sodium levels have many causes, such as heart failure, malnutrition, and diarrhea. Other electrolytes, such as … sodium levels (hyponatremia) can be caused by a lot of sweating, burns, severe vomiting or diarrhea, drinking too …
Medical tests
… glucose, in your blood. Glucose comes from carbohydrate foods . It is the main source of energy used by the body. … the day. Random testing is useful because glucose levels in healthy people do not vary widely throughout the day. Blood … test measures blood sugar exactly 2 hours after you start eating a meal. This test is most often done at home when you …
Medical tests
… or some kidney or liver diseases. As part of a regular physical examination. How To Prepare Before the test, don't … enough fluid, loss of too much fluid (excessive vomiting, sweating, or diarrhea), or substances (such as sugar or … types of poisoning, and some types of kidney diseases. Healthy pregnant women can have glucose in their urine, …
Medical tests
… needs this B vitamin to make blood cells and to maintain a healthy nervous system . Vitamin B12 is found in animal … deficiency anemia unless their bodies can't absorb it from food. Strict vegetarians (vegans) who do not eat animal … (SI units) 110–1500 picograms per millilitre (pg/mL) High values High levels of vitamin B12 can occur in liver …
Medical tests
… of folate and folic acid in the diet. Folate is found in foods such as liver; citrus fruits; dark green, leafy … a lack of either vitamin may cause anemia. Check for malnutrition or problems absorbing (malabsorption) folate. See … people with alcohol use disorder , certain cancers, or an eating disorder. Folate Deficiency …
Medical tests
… or abdominal pain. These symptoms often happen with high blood sugar and may mean you have diabetic ketoacidosis … low-carbohydrate or high-fat diet. Are starving or have an eating disorder, including disorders that result in poor nutrition such as anorexia nervosa or bulimia , alcohol use …
Medical tests
… by cells, called G cells, in the stomach lining. When food enters the stomach, G cells trigger the release of … tract . Sometimes a test for gastrin is done after eating a high-protein diet or after receiving an injection of the …
Medical tests
… A bowel transit time test measures how long it takes for food to travel through the digestive tract . After you chew and swallow your food, it moves into your stomach, where it is mixed with … stomach, it is squeezed through your small intestine, where nutrients are absorbed for use by your body. The food then …
Medical tests
… Chloride is absorbed by your intestines when you digest food. Extra chloride leaves your body in your urine. … kidney or adrenal gland problems. Help find the cause for high blood pH. A condition called metabolic alkalosis can be … caused by: Dehydration , such as from diarrhea or vomiting. Eating a lot of salt. Kidney disease. An overactive …
