Objective:To evaluate comprehensively the vitamin A(VA) status of neonates at birth and discuss the correlation with maternal VA status. Methods:From October to November 2016 in the Second Affiliated Hospital of Chongqing Medical University,blood from healthy mothers before delivery and umbilical cord blood samples from healthy neonates were collected and measured for serum retinol,retinyl esters(retinyl acetate and retinyl palmitate) and β-carotene levels by high performance liquid chromatography tandem ma...