. 2022 Dec 22;12(12):e066196. doi: 10.1136/bmjopen-2022-066196

Table 3.

Schedule of biosample collection

Visit 1 ≤12^6/7 weeks	Visit 2 13 to 26^6/7 weeks and ≥4 weeks after visit 1	Visit 3 ≥27 weeks and ≥4 weeks after visit 2	Visit 4 Admission for labour and delivery	Visit 5 6–12 weeks post partum
Pregnancy samples Peripheral blood Urine	Pregnancy samples Peripheral blood Urine	Pregnancy samples Peripheral blood Urine	Pregnancy samples Peripheral blood Urine Breastmilk/chestmilk Fetal/Infant samples Cord blood Cord Tissue Placenta Meconium Urine	Postpartum samples Peripheral blood Urine Breastmilk/chestmilk Infant samples Infant blood Urine