Liz,
Commonwealth Labs – http://www.hydrogenbreathtesting.com has this available. I am almost positive it is open access ordering. We also have a site at http://www.labtestsplus.com that allows for people to order a wide variety of tests from different companies, including Great Plains and this SIBO test.Each test also comes with a written interpretation by myself or my partner.
Sincerely,
Dr. Woeller