Metformin overdose with a resultant serum pH of 6.59: Survival without sequalae Dell'Aglio DM et al. - This case represents the largest reported amount of ingested metformin, the lowest serum pH, and the highest serum lactate concentration in any intentional metformin overdose survivor in the literature. Despite potentially lethal metabolic derangements, such patients can survive with aggressive supportive care. [more...]