The evidence is
insufficient
regarding when to prescribe SMBG
and how often testing is needed for patients who do not use an intensive insulin regimen, such as those with type 2 diabetes using oral agents or on basal insulin. For patients on basal insulin, lowering of A1C has been demonstrated for those who adjust their dose to attain a fasting glucose within a targeted range (7,8).
For individuals with type 2 diabetes on less intensive insulin therapy, more frequent SMBG (e.g., fasting, before/after meals) may be helpful, as increased frequency has been shown to be inversely correlated with glycemic control (9).
Several randomized trials have called into question the clinical utility and cost-effectiveness of routine SMBG in noninsulin-treated patients (10–12). A meta-analysis suggested that SMBG reduced A1C by 0.25% at 6 months (13), but the effect was attenuated at 12 months (14). A key consideration is that performing SMBG alone does not lower blood glucose levels. To be useful, the information must be integrated into clinical and self-management plans.
The evidence is insufficient regarding when to prescribe SMBG and how often testing is needed for patients who do not use an intensive insulin regimen, such as those with type 2 diabetes using oral agents or on basal insulin. For patients on basal insulin, lowering of A1C has been demonstrated for those who adjust their dose to attain a fasting glucose within a targeted range (7,8).For individuals with type 2 diabetes on less intensive insulin therapy, more frequent SMBG (e.g., fasting, before/after meals) may be helpful, as increased frequency has been shown to be inversely correlated with glycemic control (9).Several randomized trials have called into question the clinical utility and cost-effectiveness of routine SMBG in noninsulin-treated patients (10–12). A meta-analysis suggested that SMBG reduced A1C by 0.25% at 6 months (13), but the effect was attenuated at 12 months (14). A key consideration is that performing SMBG alone does not lower blood glucose levels. To be useful, the information must be integrated into clinical and self-management plans.
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