FDA gluten-free standard is important for celiac patients

An FDA standard that says food products must contain less than 20 parts per million of gluten to achieve gluten-free status is an important first step for celiac disease patients even if it is not the preferred zero amount, Mayo Clinic dietitians say. There are no analytic methods that reliably detect lower concentrations, they say, and experts have said the 20 ppm level is a point at which there are few or no adverse events associated with eating the food. http://www.mayoclinic.com/health/gluten-free/MY00640