There has been an alarming number of cases where quinoa was found to be infested. The infestation seems due to improper storage at some stage in packing or storing.  We therefore recommend the following:

1. Quinoa that is at least a year before its expiration (or ‘best by’) date does not require checking.
2. If it is less than one year before the expiration (or ‘best by’) date, the quinoa should be checked for insects. Place the raw quinoa in a strainer, shake for 25 seconds over a white paper or light box, and examine the surface for insects. See here for a  visual demonstration.