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Novel Assay of Metformin Levels in Patients With Type 2 Diabetes and Varying Levels of Renal Function Clinical recommendations

In English

Författare

Summary, in English

AbstractObjective: To study trough levels of metformin in serum and its intra individual variation in patients using a newly developed assay. Research Design and Methods: Trough serum levels of metformin was measured once using Liquid Chromatography Tandem Mass Spectrometry (LcMSMS) in 137 type 2 diabetes patients with varying renal function (99 men) and followed repeatedly during two months in 20 patients (16 men) with estimated GFR (eGFR) below 60 ml/min/1.73 m(2) body surface. Results: Patients with eGFR >60, 30-60, and <30 ml/min/1.73 m(2) had a median trough metformin concentration of 4.5 mumol/l (range 0.1-20.7, n=107), 7.71 mumol/l (0.12-15.15, n=21), and 8.88 mumol/l (5.99-18.60, n=9), respectively. The median intraindividual overall coefficient of variation (CV) was 29.4 % (range 9,8-74,2). Conclusions: Determination of serum metformin with the LCMSMS technique is useful in patients on metformin treatment. Few patients had values over 20 mumol/L. Metformin measurement is less suitable for dose titration.

Publiceringsår

2010

Språk

Engelska

Sidor

1291-1293

Publikation/Tidskrift/Serie

Diabetes Care

Volym

33

Issue

6

Dokumenttyp

Artikel i tidskrift

Förlag

American Diabetes Association

Ämne

  • Endocrinology and Diabetes

Status

Published

Forskningsgrupp

  • Internal Medicine - Epidemiology

ISBN/ISSN/Övrigt

  • ISSN: 1935-5548