Fig. 4From: Nonhepatic hyperammonemic encephalopathy complications following bariatric surgery: a case report and review of the literatureDiagnostic workup for a suspected urea cycle disorder, on the basis of plasma amino acid analysis. Diagnostic workup showing the steps for diagnosing the cause of a suspected urea cycle disorder, on the basis of plasma amino acid analysis (based on studies by Ruby Upadhyay, Thomas P. Bleck, and Katharina M. Busl [10]; Jamie Nicole LaBuzetta, Phil Jay Z. Yao, Daniel L. Bourque, and JustinZivin [13]; and Alison S. Clay and Bryan E. Hainline [14])Back to article page