Mean ( SE ) 24-h mean renal glucose threshold values for b.i.d. and q.d. regimens were 59.2 ( 1.03 ) and 60.2 ( 1.03 ) mg/dL for the 100 mg daily doses and 51.0 ( 1.04 ) and 52.5 ( 1.04 ) mg/dL for the 300 mg daily doses .