SIBO Test with FoodMarble (includes lactulose)humanpeople have partnered with FoodMarble as a cost effective and easy way to test for SIBO from the comfort of your own home. Not only are there no failed tests with the FoodMarble device, but results are also fast. From completion of your test and health assessment your test will be reviewed by a Doctor and nutritionist and we will give you a copy of the detailed gas report and diagnosis.