Arkansas	University of Arkansas Soil Test Laboratory
Connecticut	University of Connecticut Soil Nutrient Analysis Laboratory
Delaware	University of Delaware Soil Testing Program
Georgia	University of Georgia Ag & Environmental Service Labs
Indiana	LandOLakes (Sure-Tech Labs) Indianapolis, Indiana
Kentucky	University of Kentucky Soil Lab
New Jersey	Rutgers Soil Testing Laboratory
North Carolina	NCDA Agronomic Division Raleigh, North Carolina
Ohio	Spectrum Analytic, Inc. Washington Courthouse, Ohio Brookside Lab, Inc. New Knoxville, Ohio
Pennsylvania	Pennsylvania State University Agricultural Analytical Services Lab Agri Analysis, Inc Leola, Pennsylvania
South Carolina	Clemson University Agricultural Service Laboratory
Tennessee	University of Tennessee Soil, Plant and Pest Center
Virginia	Waypoint Analytical Virginia Virginia Tech Virginia Tech Soil Testing Lab
West Virginia	West Virginia University Soil Testing Laboratory
Wisconsin	Rock River Laboratory, INC.