Thyroid Disorders During Pregnancy

Human Chorion Gonadotropin(hCG) shares a common alpha-subunit with Thyroid-stimulating hormone(TSH) and cross-reacts with the TSH receptor. TSH declines 1st trimester – nl = 0.03-2.0 mU/l. Estrogens increase Thyroid binding globulin (TBG), and Total Thyroxine and total triiodothyronine (TT4/TT3) increase with stable FT3/FT4. A radioactive iodine (RAI) scan is contraindicated during pregnancy

Authors

Publication Details

Journal
Journal of Medical Clinical Case Reports
Published
2025-08-29
DOI
https://doi.org/10.47485/2767-5416.1125
Primary Topic
Thyroid Disorders and Treatments
Type
article
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article

Thyroid Disorders During Pregnancy

Hajnáczky Károly
Journal of Medical Clinical Case Reports
Thyroid Disorders and Treatments
article

Thyroid Disorders During Pregnancy

Hajnáczky Károly
article en

Abstract

Human Chorion Gonadotropin(hCG) shares a common alpha-subunit with Thyroid-stimulating hormone(TSH) and cross-reacts with the TSH receptor. TSH declines 1st trimester – nl = 0.03-2.0 mU/l. Estrogens increase Thyroid binding globulin (TBG), and Total Thyroxine and total triiodothyronine (TT4/TT3) increase with stable FT3/FT4. A radioactive iodine (RAI) scan is contraindicated during pregnancy

Journal of Medical Clinical Case ReportsVol. 21(12)
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Thyroid Disorders and Treatments
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Thyroid Disorders During Pregnancy — Hajnáczky Károly · Journal of Medical Clinical Case Reports (2025) | TGRS Research Map | TGRS