Lactose Tolerance Tests
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Dados do National Institutes of Health
| Lactose Tolerance Tests : What are lactose tolerance tests? Lactose tolerance tests measure your body's ability to break down lactose. Lactose is a type of sugar found in milk, cheese, ice cream, and other dairy products. Normally, an enzyme (a protein that speeds up certain chemical reactions in your body) called lactase breaks down lactose into simpler sugars. These sugars are absorbed by your body and turned into energy. If your body doesn't make enough lactase, you won't be able to properly digest foods that contain lactose. - When you can't digest all of the lactose you eat or drink and it passes into your colon, it's called lactose malabsorption. - Lactose malabsorption can cause uncomfortable symptoms such as gas, bloating, and diarrhea within 30 minutes to 2 hours after drinking milk or eating other dairy products. - Getting the symptoms of lactose malabsorption after you eat or drink products with lactose is called lactose intolerance. There are two types of lactose tolerance tests: - Hydrogen breath test. This test measures the amount of hydrogen gas in your breath before and after you drink a liquid containing lactose. If you can't digest all the lactose, it gets broken down by bacteria in your large intestine. This creates extra hydrogen gas, which you breathe out. This is the most common way to test for lactose intolerance. - Glucose blood test. This test involves a series of blood tests that measure the level of glucose (a type of sugar) in your blood before and after you drink a liquid containing lactose. If you are lactose intolerant, you usually won't have an increase in blood glucose. Other names: hydrogen breath test, oral lactose tolerance, lactose tolerance serum test, lactose intolerance test, lactose breath test, disaccharide absorption test | |
| Review Date: 30/09/2024 | Updated By: |