282 results found
Medical tests
… Test Overview Thyroid testing Thyroid hormone tests are blood tests that check how well the thyroid gland is … way the body uses energy ( metabolism ). Thyroid hormone blood tests include: Total thyroxine (T4) and free thyroxine … within a few days. Labs generally measure free T4 (FT4) levels, if the TSH is abnormal. Results of these thyroid …
Medical tests
… (CO2) is a gaseous waste product from metabolism . The blood carries carbon dioxide to your lungs, where it is … carbonic acid (H2CO3). Your kidneys and lungs balance the levels of carbon dioxide, bicarbonate, and carbonic acid in … A massive heart attack . Hyperthyroidism or uncontrolled diabetes . A serious infection of the whole body (sepsis). …
Medical tests
… Test Overview Allergy testing involves having a skin or blood test to find out what substance, or allergen , may … they are rapid, reliable, and generally less expensive than blood tests, but either type of test may be used. Skin tests … the body may make in response to certain allergens. IgE levels are often higher in people who have allergies or …
Medical tests
… This test measures the amount of lead in a person's blood. Lead is a poisonous (toxic) metal that can damage the … and other parts of the body. A lead test may be done on blood taken from the vein, a finger (finger stick), or the … you are using any natural health products. How It Is Done Blood sample from a heel stick A heel stick is used to get a …
Medical tests
… the amount of luteinizing hormone (LH) in a sample of blood or urine. LH is produced by the pituitary gland . LH … the menstrual cycle and egg production ( ovulation ). LH levels normally change with the phase of the menstrual … you take, including natural health products. How It Is Done Blood test A health professional uses a needle to take a …
Medical tests
… When you feel stressed, these hormones increase heart rate, blood pressure, breathing rate, muscle strength, and mental … the 24 hours. Being cold can raise your catecholamine levels. Drink plenty of fluids during the 24 hours to avoid … cause high levels. Low values Low values may be caused by diabetes or some nervous system problems . Related …
Medical tests
… Information Test Overview An alpha-fetoprotein (AFP) blood test checks the level of AFP in a pregnant woman's … intestines stick out through the belly wall. Normally, low levels of AFP can be found in the blood of a pregnant woman. … for each woman's age, weight, and race; whether she has diabetes that needs injections of insulin ; and the age of …
Medical tests
… Information Test Overview The sedimentation rate (sed rate) blood test measures how quickly red blood cells … Low values Low values may be caused by: High blood sugar levels. Polycythemia . Sickle cell disease . Severe liver …
Medical tests
… Test Overview Cholesterol and triglyceride tests are blood tests that measure lipids—fats and fatty substances … by a genetic disease that causes very high cholesterol levels. Cholesterol tests and heart attack risk Your … These include: Your blood pressure. Whether or not you have diabetes. Your age, sex, and race. Whether or not you smoke. …
Medical tests
… vitamin B12 test measures the amount of vitamin B12 in the blood. The body needs this B vitamin to make blood cells and … 110–1500 picograms per millilitre (pg/mL) High values High levels of vitamin B12 can occur in liver disease (such as … In rare cases, high levels may be found in people with diabetes or who are obese . Low values Low levels of vitamin …
