Objective: Liquid chromatography-tandem mass spectrometry (LC-MS/MS) is a new method to objectively and robustly detect nonadherence. We applied this technique to study nonadherence to cardiovascular medications in people with type 2 diabetes (T2DM).

Research Design And Methods: Routine urine samples, received at the time of the annual diabetes review from 228 people with T2DM in primary care, were assessed for adherence by LC-MS/MS.

Results: A total of 28.1% patients ( = 64) were nonadherent to antidiabetic, antihypertensive, and/or lipid-lowering medications. Nonadherence to statins was the highest at 23.7%, and nonadherence to oral hypoglycemic agents was 9.3%. HbA, albumin-to-creatinine ratio, and lipid profiles were significantly higher in the patients who were nonadherent compared with those who were adherent to treatment.

Conclusions: This unique study shows that routine urine samples can be used for adherence testing screening by LC-MS/MS and has demonstrated high nonadherence rates especially to statins in people with T2DM. Future intervention studies using LC-MS/MS as a diagnostic/therapeutic tool may help to improve clinical outcomes.

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http://dx.doi.org/10.2337/dc18-1453DOI Listing

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