The U.S. Food and Drug Administration (FDA) says that people on dialysis, or who take biologic drugs, could be getting a falsely high reading if they use GDH-PQQ (glucose dehydrogenase pyrroloquinoline quinone) blood glucose testing strips. The strips, manufactured by Roche, Abbott Laboratories, and other companies, may detect non-glucose sugars and cause patients to risk an insulin overdose. The FDA says most of the strips are used in nursing homes and hospitals, and they include brands such...