Pediatric Reference Intervals for Serum Thyroxine, Triiodothyronine, Thyrotropin, and Free Thyroxine
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چکیده
منابع مشابه
Pediatric reference intervals for serum thyroxine, triiodothyronine, thyrotropin, and free thyroxine.
iodothyronine, Thyrotropin, and Free Thyroxine, David Zurakowski, James Di Canzio, and Joseph A. Majzoub ( Departments of Biostatistics and Medicine and 2 Division of Endocrinology, Department of Medicine, Children’s Hospital, Harvard Medical School, Boston, MA 02115; * address correspondence to this author at: Department of Biostatistics, Children’s Hospital, 300 Longwood Ave., Boston, MA 0211...
متن کاملEstablishment of reference ranges for thyrotropin, triiodothyronine, thyroxine and free thyroxine in neonates, infants, children and adolescents.
Thyrotropin, triiodothyronine, thyroxine and free thyroxine were determined in the sera of 714 euthyreotic neonates, infants, children and adolescents (age range 5 days to 18 years), using the IMx from Abbott Laboratories. Thyrotropin, triiodothyronine and free thyroxine were determined with microparticle enzyme immunoassays (MEIA). Thyroxine was determined with a fluorescence polarization immu...
متن کاملPediatric Reference Intervals for Free Thyroxine and Free Triiodothyronine by Equilibrium Dialysis-Liquid Chromatography-Tandem Mass Spectrometry
BACKGROUND The clinical value of free thyroxine (FT(4)) and free triiodothyronine (FT(3)) analysis depends on the reference intervals with which they are compared. We determined age- and sex-specific reference intervals for neonates, infants, and children 0-18 years of age for FT(4) and FT(3) using tandem mass spectrometry. METHODS Reference intervals were calculated for serum FT(4) (n = 1426...
متن کاملLevothyroxine therapy and serum free thyroxine and free triiodothyronine concentrations.
Although the normal thyroid gland secretes both levothyroxine (L-T4) and levotriiodothyronine (L-T3), normalization of serum TSH with L-T4-replacement therapy alone in hypothyroidism is generally believed to result in a normal serum L-T3 and to reflect a euthyroid state. However several recent studies suggest that this may not be the case. Accordingly, the relationship between serum free L-T4 a...
متن کاملSerum free thyroxine and free triiodothyronine concentrations in pregnancy.
Blood was taken from women in each trimester of pregnancy at routine antenatal visits. Further samples were collected from an age matched control group of euthyroid women taking no medication. Free triiodothyronine and free thyroxine concentrations were measured by direct radioimmunoassay (Amerlex Kit methods, Amersham International, Amersham, Buckinghamshire).2 These free hormone assays use th...
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ژورنال
عنوان ژورنال: Clinical Chemistry
سال: 1999
ISSN: 0009-9147,1530-8561
DOI: 10.1093/clinchem/45.7.1087