Effectiveness of community-based folate-oriented tertiary interventions on incidence of fetus and birth defects: a protocol for a single-blind cluster randomized controlled trial

Table 2 Parental biomarkers evaluated in the study

Biomarkers	Sample type	Baseline	During early pregnancy
Biomarkers	Sample type	(Couples)	(Females)
Folate, ng/ mL	Serum	×	×
RBC Folate, ng/ mL	Whole blood	×	×
Homocysteine, μmol/L	Serum	×	×
Vitamin D, ng/mL	Serum	×	×
Vitamin B12, pg/mL	Serum	×	×
Vitamin A, μg/mL	Serum	×	×
Vitamin E, μg/mL	Serum	×	×
Iron protein, ng/mL	Serum	×	×
Metals (Fe, Zn, Se, Cu, Ca, etc), mg/L	Serum	×	×
DNA	Whole blood	×
Genotyping	DNA	×	×
CHOL, HDL, LDL, TG, Fasting glucose	Serum	×	×

ISSN: 1471-2393