If you can't find one (like I couldn't for my area), order a Beer Test Kit from Ward Labs. I ordered mine a couple of weeks ago, got the package two days later, sent back the bottle filled with water, and received a report via email a week later. Not a bad deal for $36.00 (includes shipping both ways). A local lab wanted $80-$90 for the same test. https://producers.wardlab.com/BrewersKitOrder.aspx