It seems to depend on age, too.

来源: 于 2014-09-24 10:47:45 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次
For example, if he's 60 or older, less than 160 mg/dL is OK.

See http://www.webmd.com/diabetes/blood-glucose?page=3.