Description of Plasma Concentrations of Free Amino Acidswith Some Clinical Symptoms of Patients Under 5 withShort Bowel Syndrome by Luu Thi My Thuc in Current Trends in Gastroenterology and Hepatology in Lupine Publishers. Amino acid (AA) is the main component of proteins. Changes in levels of plasma AA concentration have been mentioned in some cases such as plasma AA concentrations in chronic kidney disease (CKD) patients are low when inflammation status increases [1] or patients with short bowel syndrome (SBS) undergoing total parenteral nutrition (TPN) have decreasing concentrations of essential amino acids (EAA), increasing rate of malnutrition and complications while for those undergoing part of parenteral nutrition (PN), there was just a decrease in concentrations of two branched chain amino acids, leucin, valine, cysteine, and tyrosine [2]. Autistic children had significant lower plasma levels of leucine, isoleucine, phenylalanine, methionine, cysteine, serine, ty...