Which of the following is the best test for assessment of intestinal malabsorption?
(A) Fecal fat estimation (B) Serum lactose levels (C) Serum amylase levels (D) NBT-PABA test
(A) Ans: A(Ref: Harrison 19/c p193(S)Fecal fat estimation - Gold standard test for diagnosis of malabsorption.Intestinal malabsorption diagnosis:D-xylose test.Tests for xylose absorption in intestinal villi.Distinguishs intestinal from pancreatic malabsorption.Pancreatic malabsorption diagnosis:NBT-PABA & serum amylase.