Joel Morgan Soil test
Below is a web site which will provide you with more information about growing hops.
You can get purchase an MSU soil test kit through the local MSUE office located at 775 Ball NE in Grand Rapids (office is open between 9 a.m. and 4 p.m.). Or you can purchase a kit online via the web site below.
This kit includes everything you will need including instructions on how to take a soil sample and mail it to MSU. Results take about two weeks.
Hope that helps.