There are no specific tests to diagnose auto brewery syndrome.
This condition is still newly discovered and more research is needed.
Symptoms alone are typically not enough for a diagnosis.
Your doctor will likely do a stool test to find out if you have too much yeast in your gut. This involves sending a tiny sample of a bowel movement to a lab to be tested. Another test that might be used by some doctors is the glucose challenge.
In the glucose challenge test, you’ll be given a glucose (sugar) capsule. You won’t be allowed to eat or drink anything else for a few hours before and after the test. After about an hour, your doctor will check your blood alcohol level. If you don’t have auto brewery syndrome your blood alcohol level will be zero. If you have auto brewery disease your blood alcohol level may range from 1.0 to 7.0 milligrams per deciliter.
If you suspect you have this auto brewery syndrome, you might try a similar test at home,
though you shouldn’t use it to self-diagnose. Eat something sugary, like a cookie, on an empty stomach.
After an hour use an at-home breathalyzer to see if your blood alcohol level has risen.
Write down any symptoms.
This home test may not work because you may not have noticeable symptoms. At-home breathalyzers may also not be as accurate as the ones used by doctors and law enforcement. Regardless of what you observe, see a doctor for a diagnosis.