Бог его знает, что считать регламентирующим документом, тем более, речь идёт о разных государствах.
Чем Вас не устраивает текущая позиция АТА (2017 Guidelines of the American Thyroid Association for the Diagnosis and Management of Thyroid Disease During Pregnancy and the Postpartum, [
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Цитата:
Nonetheless, to provide guidance to all patients and clinicians, the panel recommends use of the following trimester-specific ranges and cutoffs when local assessments are not available. In the first trimester, the lower reference range of TSH can be reduced by approximately 0.4 mU/L, while the
upper reference range is reduced by approximately 0.5mU/L. For the typical patient in early pregnancy, this corresponds to a TSH upper reference limit of 4.0mU/L. This reference limit should generally be applied beginning with the late first trimester, weeks 7–12, with a gradual return towards the nonpregnant range in the second and third trimesters. For specific recommendations regarding the diagnosis and treatment of maternal hypothyroidism, see Section VII.
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Цитата:
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Treatment with LT4 is strongly recommended for antibody positive women with TSH greater than the pregnancy specific references, and for antibody negative women with TSH levels higher than 10. The therapy may also be considered for others, depending on TSH levels.
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