Red Blood Cell Folate Insufficiency among nonpregnant Women of Childbearing age in Guatemala 2009 to 2010: Prevalence and predicted Neural Tube Defects risk

BACKGROUND The World Health Organization recently released recommendations stating that red blood cell (RBC) folate concentrations should be above 400 ng/L (906 nmol/L) for optimal prevention of folate-sensitive neural tube defects (NTDs). The objective of this study was to determine the distribution of folate insufficiency (FI) (