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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).
Miscarriage: this occurs when a baby dies in the first few months of a pregnancy, usually before 22 weeks of pregnancy. TSH: thyroid stimulating hormone — produced by the pituitary gland that regulates thyroid function; also the best screening test to determine if the thyroid is functioning normally.
11 Αυγ 2023 · Women with established hypothyroidism should have a TSH test as soon as pregnancy is confirmed. They also should immediately increase their levothyroxine dose, because thyroid hormone requirements increase during pregnancy. (See below for specific dosing recommendations.)
15 Φεβ 2014 · Serum TSH should be measured in pregnant women who are being treated for hypothyroidism at four to six weeks' gestation, then every four to six weeks until 20 weeks' gestation and on a stable...
9 Νοε 2011 · The new recommendations for TSH levels during pregnancy are the following: First trimester: less than 2.5 with a range of 0.1-2.5. Second trimester: 0.2-3.0. Third trimester: 0.3-3.0....
31 Μαρ 2022 · The lowest TSH value was detected at 8-12 weeks in early pregnancy, and the median value of TSH in the T1b subgroup was significantly lower than the T1a subgroup (P < 0.05).
1 Ιουλ 2020 · Thyroid hormones are crucial for normal pregnancy and fetal development. Large physiological changes occur during pregnancy, posing challenges for the correct interpretation of thyroid function tests. TSH concentrations are the principal first test to rule out thyroid disease taking into account trimester-specific reference ranges.
