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propositus' mother is heterozygous for this mutation and his sister inherited the normal allele (fig. 1 b). His mother was euthyroid (TSH 1.86 mIU/l, 0.35-5.50; fT 4 1.0 ng/dl, 0.9-1.8), but her TT 4 was also below the reference range (3.0 µg/dl, 4
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Reference range Year 2020 Year 2021 March 23 April 7 April 9 June 22 August 5 December 7 February 2 March 18 a April 12 April 14 April 27 Thyrotropin (mIU/L) 0.27–4.20 5.42 7.36 2.86 1.35 3.21 2/29 1
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media. Inclusion criteria of the patients were age between 18 and 80 years, a first-time diagnosis of GD, elevated level of thyrotropin receptor antibody, hyperthyroidism at first visit (TSH <reference range and free levels of triiodothyronine and
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Institut National de la Recherche Médicale, UMR U895, University Nice-Sophia-Antipolis, Nice, France
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Institut National de la Recherche Médicale, UMR U895, University Nice-Sophia-Antipolis, Nice, France
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-Cerba Laboratory). Reference ranges were established in our laboratory for fT4 and TSH during the first trimester of pregnancy (2.5 and 97.5 percentiles): fT4 11.47–19.23 pmol/l, and TSH 0.053–3.23 mUI/l. The other (nonpregnancy) reference ranges were provided by
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in adults, without significant gender differences in the children population [ 18 ]. In adults, Ct values should be interpreted in the setting of sex-specific reference ranges, as suggested by ATA guidelines [ 10 ], though most centers to date have a
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R3. For TPOAb-positive subjects' rates, reference values R1, R2 and R3 were 15% (3/20), 5% (1/20) and 20% (4/20), respectively. Table 1 Prevalence of thyroid hormone deficiency using three reference ranges Rates of positive TPOAb
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institutional trimester-specific limits for serum TSH and FT4 ( 10 ). Our reference range for serum TSH (2.5–97.5th percentile) during the period 11 (9–14) weeks was 0.06–3.74 mIU/L, and 10.29–18.02 pmol/L for serum FT4 ( 10 ). Thyroid autoimmunity (TAI) was
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function in healthy individuals with an intact HPT axis. Specifically, the assumption has been that a TSH in the reference range is the most important and sensitive parameter in assessing for euthyroidism, and the measurement of TH levels is secondary and
Istituti Clinici Scientifici Maugeri IRCCS, Unit of Endocrinology and Metabolism, Laboratory for Endocrine Disruptors, Pavia (PV), Italy
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Istituti Clinici Scientifici Maugeri IRCCS, Unit of Endocrinology and Metabolism, Laboratory for Endocrine Disruptors, Pavia (PV), Italy
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using a third generation immunoassay Immunolite 2000® Systems Analyzer (Siemens Healthcare) employing monoclonal antibodies. In the absence of a trimester-specific reference range, we chose the reference range for TSH in the non-pregnant adult population
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, Schlienger JL , Sapin R , . Reference range of serum calcitonin levels in humans: influence of calcitonin assays, sex, age, and cigarette smoking . Eur J Endocrinol . 2007 Dec ; 157 ( 6 ): 749 – 55 . 14 Castagna MG , Fugazzola L