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Thyroid function testing in pregnancy and thyroid disease: trimester-specific reference intervals.

Offie P Soldin1

  • 1Department of Medicine, Division of Endocrinology and Metabolism, Lombardi Cancer Center, Washington, DC 20057-1465, USA. os35@georgetown.edu

Therapeutic Drug Monitoring
|January 19, 2006
PubMed
Summary
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Thyroid hormone levels naturally change during pregnancy. Using gestational age-specific reference intervals ensures accurate thyroid function assessment for optimal maternal and fetal health.

Area of Science:

  • Endocrinology
  • Obstetrics
  • Maternal-Fetal Medicine

Background:

  • Thyroid hormone concentrations undergo significant physiological changes during pregnancy due to hyperstimulation.
  • Accurate thyroid function assessment is crucial for managing thyroid hormone therapy initiation and dose adjustments.
  • Thyroid insufficiency in pregnancy is linked to adverse obstetric outcomes and fetal neurodevelopmental issues.

Purpose of the Study:

  • To highlight the importance of accurate thyroid function assessment during pregnancy.
  • To emphasize the need for trimester-specific and gestational age-specific reference intervals for thyroid function tests.
  • To inform clinical practice regarding individualized thyroid hormone supplementation.

Main Methods:

  • Utilizing available gestational age-specific reference intervals for thyroid function tests.

Related Experiment Videos

  • Monitoring changes in thyroid hormone concentrations throughout pregnancy.
  • Comparing patient hormone levels to established trimester-specific norms.

    • Main Results:

    • Pregnancy involves dynamic alterations in thyroid hormone levels.
    • Established reference intervals vary across trimesters.
    • Individualized supplementation can be guided by these specific intervals.

    Conclusions:

    • Gestational age-specific reference intervals are essential for precise thyroid function evaluation in pregnant individuals.
    • Understanding normal hormonal fluctuations enables timely and appropriate thyroid hormone management.
    • Accurate assessment supports improved maternal and fetal health outcomes.