Correlation between Iodine Supplement in Pregnancy and Neonatal TSH Level

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Correlation between Iodine Supplement in Pregnancy and Neonatal TSH Level

Dandamrongrak et al., 2016 | J Med Assoc Thai | Rct

Citation

Dandamrongrak Poonsuk, Chawanpaiboon Saifon. Correlation between Iodine Supplement in Pregnancy and Neonatal TSH Level. J Med Assoc Thai. 2016-Dec;99(12):1257-62

Abstract

OBJECTIVE: To evaluate the correlation of neonatal thyroid stimulating hormone (TSH) between iodine supplemented and no-iodine supplemented pregnant women. MATERIAL AND METHOD: The present study was a prospective randomized controlled trial (RCT) that was taken at ANC unit, labor ward, and neonatal unit at Siriraj Hospital, Mahidol University, Bangkok, Thailand. Two hundred sixty six pregnant women were recruited between June 15, 2015 and July 31, 2016. They were randomized into two groups, iodine and no-iodine supplemented group. RESULTS: No statistical significant of demographic data, original habitant areas, and adverse neonatal outcomes including preterm labor and low birthweight, of the pregnant patient between these two groups. Only the median value of neonatal TSH level was 3.44 and 3.95 mIU/l in iodine and no-iodine supplemented group, respectively, which was statistically significant different between the two groups (p-value <0.05). However, there were no clinical difference between the two groups. CONCLUSION: The present study presented that there was statistical significant difference of the median value of neonatal TSH level between two groups of iodine and no-iodine supplement pregnant women. Even if there was no clinically significant difference and none of the newborn was diagnosed of hypothyroidism, iodine supplementation in all pregnant women should be of concerned. A large prospective study would benefit the iodine implementation of pregnant women in Siriraj Hospital.

Key Findings

No statistical significant of demographic data, original habitant areas, and adverse neonatal outcomes including preterm labor and low birthweight, of the pregnant patient between these two groups. Only the median value of neonatal TSH level was 3.44 and 3.95 mIU/l in iodine and no-iodine supplemented group, respectively, which was statistically significant different between the two groups (p-value <0.05). However, there were no clinical difference between the two groups.

Outcomes Measured

  • Requires manual extraction

Population

Field Value
Population pregnant women
Sample Size See abstract
Age Range See abstract
Condition See abstract

MeSH Terms

  • Adult
  • Dietary Supplements
  • Female
  • Hospitals
  • Humans
  • Infant, Newborn
  • Iodine
  • Male
  • Obstetric Labor, Premature
  • Pregnancy
  • Pregnancy Outcome
  • Prospective Studies
  • Socioeconomic Factors
  • Thailand
  • Thyrotropin
  • Universities

Evidence Classification

  • Level: Rct
  • Publication Types: Journal Article, Randomized Controlled Trial, Research Support, Non-U.S. Gov't
  • Vertical: iodine-pregnancy

Provenance

  • PMID: 29952487
  • DOI: (not available)
  • PMCID: Not in PMC
  • Verified: 2026-04-09 via PubMed E-utilities API

Source extracted via PubMed E-utilities API on 2026-04-09