How to Test for Fructose Malabsorption
You can not be certain that you suffer from Fructose Malabsorption until using a professional test. Testing Fructose Malabsorption is commonly done using a hydrogen breath test, which measures hydrogen (and methane) production within your body after consuming fructose. It is a safe and non-invasive technique with a sensitivity and specificity of about 98% and 86% respectively.
The test is based on the failure to absorb fructose in case of Fructose Malabsorption. Bacteria metabolize non-absorbed fructose to either hydrogen or methane. These gasses are partially absorbed into the blood and reach the lung. So, the more of these gasses are present, the less fructose has been absorbed.
The diagnostic process in case of Fructose Malabsorption
Testing Fructose Malabsorption is performed after a short fasting period of 8-12 hours. During the last 2 hours, you are not allowed to smoke and exercise. 3-4 measurements are taken directly after fasting and serve as basal level. You then consume a small amount of fructose, typically between 25 and 35 g (a glass of orange juice contains about 15 g fructose) and your breath is analyzed for hydrogen/methane every 15, 30 or 60 minutes for 2-4 hours.
If the hydrogen level rises above 20 ppm (parts per million) over the lowest value within the test period, you typically get diagnosed with Fructose Malabsorption. If methane is produced instead, then the limit is about 12 ppm.
For those, who like watching videos, I have also attached a nice one explaining that process.
If you want to perform that hydrogen breath test by yourself, it is now possible for US citizens. Aerodiagnostics has made a test kit available for use at home.
Read the full article: https://www.fructohelp.com/testing-fructose-malabsorption/