Insulin Concentration Concerns: A message from William T. Cefalu, MD
We have serious concerns about the article, “Insulin Concentration in Vials Randomly Purchased in Pharmacies in the United States: Considerable Loss in the Cold Supply Chain,”[1] published in the Journal of Diabetes Science and Technology on December 21, 2017. The article describes measuring insulin concentration in vials of human insulin (regular and NPH) from different pharmacies at different…