 24 subjects equally divided between subjects with normal hepatic function and those with moderate hepatic impairment defined by the protocol as a Child-Pugh classification of grade B score of 7-9will be given a single injection of teduglutide 20mg through subcutaneous injection into the abdomen. Blood samples would be taken within 30 minutes of dose through 24 hours post-dose. Subjects in both groups are matched up by sex, age, BMI, and renal function. 