Cyrex labs are more comprehensive than traditional blood tests, but the same problems occur with this type of testing. The lab measures antibody responses to different gluten proteins as well as proteins that the body my confuse for gluten. Unfortunately, there are thousands of different types of gluten-based proteins and Cyrex only measures a handful. Genetic testing identifies the body’s propensity to react to gluten, based on your DNA. This is a much more accurate tool to determine whether one should avoid gluten or not.