The following is a list USDA approved laboratories to Test Seed Potato for the Pathogen Clavibacter michiganense subsp. sepedonicus for Export to Canada.
Colorado State University Potato Certification Service Laboratory
San Luis Valley Research Center 0249 East Road 9 North Center,
Colorado, 81125
Idaho Crop Improvement Association
1680 Foote Drive
Idaho Falls, Idaho 83402
Maine Potato Seed Testing Laboratory
744 Main Street
Presque Isle, ME 04769
Minnesota Department of Agriculture Seed Potato Certification Laboratory
312 4th Ave. NE
East Grand Forks, MN 56721
Montana State University Seed Potato Disease Testing Laboratory
223 Plant Growth Center
Montana State University
Bozeman, MT 59717
North Dakota State University Plant Diagnostic Laboratory
206 Waldron Hall
P.O. Box 5012 Fargo, ND 58105
Potato Certification Association of Nebraska
PO Box 339
Alliance, NE 69301