Age- and gender-specific reference values for urine albumin/creatinine ratio in children of southwest China.

Background: The reference value for the urine albumin/creatinine ratio (ACR) varies between races and has not been previously validated in children. We assessed the ACR reference values and the factors that affect them in a population of healthy Chinese children.

Methods: A total of 1986 healthy children (1078 males, 908 females) aged 6-19 y were enrolled.