You can test your gut microbiome in different ways. One way is to use a stool sample. This can be done by sending a stool sample to a lab or by using a home testing kit.
Another way to test your gut microbiome is by using a piece of equipment called a flexible sigmoidoscope. This device is inserted into the rectum and allows doctors to see the inside of the rectum and colon.
A third way to test your gut microbiome is by using a breath test. This test measures how much hydrogen gas someone exhales after drinking lactulose or other sugar solutions. The more hydrogen gas that is exhaled, the greater the amount of bacteria in the gut that are digesting these sugars.