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The TSH reference range in 1st trimester was above 2.5 mIU/L, 2nd and 3rd trimester criteria were above 3.0 mIU/L, latter is recommended by ATA. The tendency of TSH index increased along with the trimester, and approached the nonpregnant control group criteria in the 3rd trimester.
8 Ιαν 2020 · The chart below shows you how to know when your TSH levels are normal, low, and high when you’re pregnant, specifically between the ages of 18 and 45: Stage of pregnancy Normal
TSH levels decreased gradually at weeks 5 to 6 to the lowest point at weeks 9 to 12 (range 0.07 – 3.28 mU/L). This is followed by a rise back to an intermediate value at weeks 15 to 19 (range 1.29 – 3.29 mU/L).
15 Φεβ 2014 · The incidence of hypothyroidism during pregnancy is estimated to be 0.3% to 0.5% for overt hypothyroidism and 2% to 3% for subclinical hypothyroidism. 11 Overt hypothyroidism is defined as...
The goal of LT 4 treatment is to normalize maternal serum TSH values within the trimester-specific pregnancy reference range (first trimester, 0.1–2.5 mIU/L; second trimester, 0.2–3.0 mIU/L; third trimester, 0.3–3.0 mIU/L).
21 Ιουλ 2022 · Objective. (1) To provide an overview of published reference intervals for thyrotropin (TSH) and free thyroxine (FT4) in pregnancy, (2) to assess the consequences of common methodological between-study differences by combining raw data from different cohorts. Methods.
LOW TSH : Some causes of low TSH levels include, hyperthyroidism (Graves' disease), stimulation of the TSH receptor by hCG (first trimester of pregnancy, hyperemesis gravidarum, molar pregnancy/choriocarcinoma), exogenous thyroid hormone, thyroiditis, an autonomous thyroid nodule, dopamine, glucocorticoids, secondary hypothyroidism. References: 1.
