To prepare for the lactose intolerance breath test, you should fast for 12 hours, as well as avoid medications such as antibiotics and laxatives for 2 weeks before the test.In addition, it is recommended to follow a special diet the day before the test.avoiding foods that can increase the production of gases such as milk, beans, pasta and vegetables.
This test should be prescribed by the doctor and is one of the most used to confirm the diagnosis of lactose intolerance, the result is given on site and the test can be performed in adults and children from 1 year.suspected lactose intolerance.
- At the beginning of the test.
- The person should blow slowly into a small device that measures the amount of hydrogen in the breath.
- Which is the gas that occurs when you have lactose intolerance.
- Then you should ingest a small amount of diluted lactose in water and blow back into the unit every 15 to 30 minutes.
- For a period of 3 hours.
The diagnosis of intolerance is based on the test result, when the amount of hydrogen measured is 20 ppm higher than the first measurement, for example, if in the first measurement the result was 10 ppm and if after taking lactose there are results greater than 30 ppm, the diagnosis will be that there is lactose intolerance.
The test is done with a 12-hour fast for adults and children over 2 years old, and a 4-hour fast for 1-year-olds.In addition to fasting, other necessary recommendations are:
In addition, 1 hour before the test, it is forbidden to drink water or smoke, as this may end up influencing the result.
The lactose intolerance respiratory test is performed with the induction of an intolerance attack, some discomfort is normal, especially due to symptoms such as bloating, excess gas, abdominal pain and diarrhea.
If the test result is positive, see what to eat if there is lactose intolerance in the following video:
See a sample menu and find out what the lactose intolerance diet looks like.
While the respiratory test is one of the most commonly used to identify a possible lactose intolerance, as it is fast and convenient, there are others that also help to achieve diagnosis, however, any of these tests can cause the same side effects, as they depend on lactose intake to get their results.Other usable tests include:
In this test, the person drinks a concentrated solution of lactose and then takes several blood samples over time to evaluate blood sugar variation.In case of intolerance, these values should remain similar in all samples or increase very slowly.
This is a similar test to lactose tolerance, however, instead of using a lactose solution, a glass of approximately 500 ml of milk is ingested, the test is positive if blood sugar does not change over time.
The heartburn test is usually used in infants or children who cannot perform other tests; in fact, the presence of unde digested lactose in the stool leads to the creation of lactic acid, which makes stool more acidic than normal and can be detected over a period of time.stool test.
Biopsy is used less frequently, but can be used when symptoms are unconventional or when the results of other tests are inconclusive.In this test, a small portion of the intestine is taken using colonoscopy and evaluated in the laboratory.