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Research shows the feasibility of harmonized reference intervals for thyroid tests, indicating improved interpretive consistency.
Percentile transformation with regression-based recalibration enables practical and cost-effective harmonization of thyrotropin and FT4 reference intervals. Although T3 harmonization remained limited, this approach demonstrates the feasibility and clinical value of harmonized common reference intervals for improving interpretive consistency in thyroid function tests.
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Cho et al. (2025) studied this question.
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