The U.S. Preventive Services Task Force recommends screening for type 2 diabetes in asymptomatic adults with sustained blood pressure (either treated or untreated) greater than 135/80 mm Hg.
U.S. Preventive Services Task Force. Diabetes Mellitus (Type 2) in Adults: Screening recommendation statement [Internet]. 2008 Jun [cited 2014 Jan 8]. Available from: http://www.uspreventiveservicestaskforce.org/uspstf08/type2/type2rs.htm