Thank you for your question, Lavonne.  There are a variety of soil testing labs in our area, compiled in this OSU Extension article:  Analytical Laboratories Serving Oregon | OSU Extension Catalog | Oregon State University

Each lab has its own fee schedule, so you should ask them.  There are some soil factors that differ from species to species, especially pH.  Vegetables need a higher (less acidic) soil pH than do blueberries and rhododendrons, for example.  I suggest you tell the lab what plants are in the soil you want tested, so they can advise you how many samples to collect, and how to collect them.  I hope this is helpful. Good luck!