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Vol. 58. Issue 3.
Pages 222-227 (1 March 2003)
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Vol. 58. Issue 3.
Pages 222-227 (1 March 2003)
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Valores de tirotropina, triyodotironina libre y tiroxina libre en niños y adolescentes en la Comunidad Autónoma de Madrid mediante quimioluminiscencia
Values of thyrotropin, free triiodothyronine and free thyroxine using chemiluminescence in children and adolescents in the autonomous community of madrid (spain)
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B. García Cuarteroa,
Corresponding author
bgarciac@hsvo.insalud.es

Correspondencia: Servicio de Pediatría. Hospital Severo Ochoa. Avda. Orellana, s/n. 28911 Leganés. Madrid. España.
, C. García Lacalleb, C. Jiménez Lobob, V. Nebreda Péreza, C. Calvo Reya, A. García Vergaza, N.J. Alcázar Villara, M. de la Torre Verdúa
a Servicio de Pediatría Hospital Severo Ochoa. Madrid. España
b Laboratorio de Bioquímica. Hospital Severo Ochoa. Madrid. España
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Objetivo

El objetivo del presente trabajo ha sido establecer los valores de referencia de las hormonas tiroideas (tirotropina [TSH], triyodotironina [T3] libre y tiroxina [T4] libre) mediante quimioluminiscencia en niños y adolescentes de la Comunidad Autónoma de Madrid.

Método

371 niños y adolescentes de ambos sexos, diferentes edades y estadios puberales, participaron en este estudio. Los valores de TSH y T3 y T4 libres en suero se determinaron mediante quimioluminiscencia.

Resultados

Los valores de TSH y T4 y T3 libres descienden de forma inversamente proporcional a la edad cronológica con di->ferencias significativas entre los grupos prepuberales y puberales. Existen, además, diferencias puntuales entre sexos en algunos grupos.

Conclusiones

Los valores de las hormonas tiroideas disminuyen con la edad cronológica. A la vista de las diferencias en los valores de estas hormonas entre sujetos prepuberales y puberales consideramos necesario incluir los diferentes estadios puberales en la estandarización de estas hormonas.

Palabras clave:
Triyodotironina libre
Tiroxina libre
Tirotropina
Niños
Quimioluminiscencia
Objective

To establish the reference ranges of thyrotropin (TSH), free triiodothyronine (FT3) and free thyroxine (FT4) with the chemiluminescence method in healthy children and adolescents in Madrid, Spain.

Method

A total of 371 children and adolescents of both sexes, with different ages and at different pubertal stage participated in the study. Serum values of TSH, FT3, and FT4 were determined by chemiluminescence.

Results

TSH, FT4 and FT3 reference ranges decreased inversely with chronological age. Significant differences were found between prepubertal and pubertal groups. In some groups, there were also occasional differences between sexes.

Conclusions

Thyroid hormone levels decrease with chronological age. Because of the differences in hormone levels between prepubertal and pubertal subjects, we believe that different pubertal stages should be included in the standard reference values of these hormones.

Key words:
Free triiodothyronine
Free thyroxine
Thyrotropin
Children
Chemiluminescence
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Copyright © 2003. Asociación Española de Pediatría
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