Vitamin A, D, and E Levels and Reference Ranges for Pregnant Women: A Cross-Sectional Study 2017-2019.

ABSTRACT: Background: Pregnancy-specific vitamin reference ranges are currently not available for maternal vitamin management during pregnancy. This study aimed to propose pregnancy-specific vitamin reference ranges and to investigate the factors influencing vitamin levels during pregnancy. Methods: A cross-sectional study that included pregnant women from 17 cities in 4 provinces in western China was conducted from 2017 to 2019. A total of 119,286 subjects were enrolled in the study. Serum vitamin A, vitamin D, and vitamin E levels were measured. A multivariable linear regression model and restricted cubic spline function were used to analyze the factors related to vitamin levels. Results: The reference ranges for vitamin A, D, and E levels were 0.22-0.62 mg/L, 5-43 ng/mL, and

SUBMITTER: Gao F 

PROVIDER: S-EPMC8019719 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature