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08:33
An Ex vivo Culture System to Study Thyroid Development
Published on: June 6, 2014
Gestational age-specific reference intervals for serum thyroid hormone levels in a multi-ethnic population
Clinical Chemistry and Laboratory Medicine
|April 10, 2017
Summary
Establishing gestational age-specific thyroid hormone reference intervals is crucial for pregnant women. This multi-ethnic study found minimal ethnic differences, emphasizing local data for accurate thyroid function assessment.
Area of Science:
- Endocrinology
- Reproductive Medicine
- Clinical Chemistry
Background:
- Thyroid disorders are common in pregnancy, yet ethnic variations in thyroid hormone levels are understudied.
- Accurate thyroid hormone monitoring is vital for maternal and fetal health during gestation.
Purpose of the Study:
- To establish gestational age-specific reference intervals for serum thyroid hormones in a multi-ethnic pregnant population.
- To determine if separate reference intervals are necessary for different ethnic groups.
Main Methods:
- Analyzed serum thyroid hormone levels (TSH, free T4, free T3, total T4, total T3) in 926 pregnant women across four gestational periods.
- Used Abbott Architect immunoassays for precise measurements.
- Established reference intervals (2.5th-97.5th percentiles) using data from 562 women negative for thyroid autoantibodies.
Main Results:
- Provided reference intervals for serum thyroid hormones during early gestation (9-14 weeks).
- Found no significant ethnic differences in most thyroid hormone reference intervals.
- Observed a slight elevation in the upper reference limit for total T3 in Malay women compared to Chinese women at 28-32 weeks gestation.
Conclusions:
- Emphasizes the need for locally derived, gestational age-specific reference intervals for thyroid hormone parameters.
- Suggests that while ethnic variations are minimal, local data is essential for accurate interpretation of thyroid function tests in pregnant populations.
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