What question did this study set out to answer?

To establish reference limits and reference change values for thyrotropin (TSH) using an indirect post hoc statistical technique in a population without thyroid dysfunction.

January 1, 2015Nuklearmedizin - NuclearMedicine

Reference range for thyrotropin

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Authors

AGAlice GiacobinoOspedale degli Infermi WEWilhelm EcklInstitute of Strength Physics and Materials Science HWHans Günther WahlMSB Medical School Berlin

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Implication

Retrospective study reveals standard indirect statistical methods closely align with conventional thyrotropin reference limits in healthy individuals, highlighting risks of unverified guidelines.

Key Points

To establish reference limits and reference change values for thyrotropin (TSH) using an indirect post hoc statistical technique in a population without thyroid dysfunction.
Applied Katayev's indirect method to 399 subjects without thyroid dysfunction by plotting cumulative frequencies against log-transformed TSH values and extrapolating the regression line to derive 95% confidence intervals.
Assessed biological variation and calculated reference change values (RCVs) in a subset of 65 subjects who underwent repeated measurements.
TSH reference intervals derived from the indirect method matched conventionally established laboratory limits but differed significantly from previous recommendations.
Reliance on unverified external reference limits risks missing cases of subclinical thyroid dysfunction, particularly in populations with high rates of thyroid autonomy.

Cite This Study

Giacobino et al. (2015) studied this question.

synapsesocial.com/papers/6a8987364c30e1095aec7a42 https://doi.org/10.3413/nukmed-0671-14-06

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Implication

Retrospective study reveals standard indirect statistical methods closely align with conventional thyrotropin reference limits in healthy individuals, highlighting risks of unverified guidelines.

Reference range for thyrotropin

Discussion

Member takes

Implication

Key Points

Cite This Study

Reference range for thyrotropin

Discussion

Member takes

Implication

Key Points

Cite This Study

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