Product FAQ > Beta-1,3D Glucan > When one shops, how can one determine if they are getting a properly prepared, sufficiently purified and biologically active material?

Price is no indicator at all. Unless that particular batch has been properly assayed for purity and potency, you can not know if the dose is in the proper amount. Also, you can not expect a quality product unless every batch is tested…including a test for bioactivity. Many companies test nothing at all.