Always ahead of the spa-industry curve, especially in matters health-related, Canyon Ranch recently began offering a comprehensive biomarker exam, the Biophysical250, to clients at its Tucson and Lenox, Massachusetts locations. (Its Miami Beach residential community, Canyon Ranch Living, will start offering the test in July.) For more than two decades, Canyon Ranch's physicians have principally worked as "preventive health consultants, " according to corporate medical director MarkLiponis, M.