Fig. 4From: Long-term renal outcome in methylmalonic acidemia in adolescents and adultsHypokalemia was due to a nonreabsorbable anion effect of methylmalonate. a Urinary potassium (mmol/mmol of creatininuria) was positively associated with urinary methylmalonate (µmol/mmol of creatininuria), R = 0.77, p = 0.004. b Serum potassium (mmol/L) was negatively associated with urinary methylmalonate (µmol/mmol of creatininuria), R = − 0.61, p = 0.03Back to article page