Iodine Supplement Strategies Between Routine Iodine Supplementation and Selective Iodine Supplementation

The Study to Compare Iodine Supplement Strategies Between Routine Iodine Supplementation and Selective Iodine Supplementation

Pregnant women who attend at our antenatal clinic will random to 2 groups. First will receive routine iodine supplementation. The other will receive iodinated pill or only iron supplementation base on their urine iodine status.

Inclusion Criteria:

• first visit for antenatal care in the first trimester
• singleton pregnancy
• delivered at Maharaj Nakorn Chiangmai Hospital

Exclusion Criteria:

• thyroid disease which diagnosed before pregnancy or currently
• history of thyroid gland surgery or iodine ablation therapy
• received iodine supplement before pregnancy
• received any medication for thyroid disease treatment, within 6 weeks postpartum women or breast feeding period
• family history of thyroid disease
• having underlying disease or contraindication which cannot received iodine supplement
• loss follow-up or incomplete data.