What are the three thyroid function tests for pregnant women?

Dec 20, 2024 Source: Cainiu Health

Dr. Zhang Lu

Introduction

Pregnant women undergoing thyroid function tests, such as free triiodothyronine (FT3), free thyroxine (FT4), and thyroid-stimulating hormone (TSH), can be diagnosed with various thyroid and pituitary disorders, including hypothyroidism, hyperthyroidism, subclinical hypothyroidism, Hashimoto's thyroiditis, and pituitary microadenoma.

Generally, the term "Thyroid Function Test 3" refers to a set of three thyroid function tests, including Free Triiodothyronine (FT3), Free Thyroxine (FT4), and Thyroid-Stimulating Hormone (TSH). These tests in pregnant women can help detect conditions such as hypothyroidism, hyperthyroidism, subclinical hypothyroidism, Hashimoto's thyroiditis, and pituitary microadenoma. Detailed analysis is as follows:

1. Hypothyroidism

Hypothyroidism is usually associated with excessive iodine intake. Results from the Thyroid Function Test 3 may show elevated TSH levels and decreased FT4 levels. Common symptoms include cold intolerance, fatigue, and low mood.

2. Hyperthyroidism

Hyperthyroidism may be related to improper diet. If a pregnant woman has hyperthyroidism during pregnancy, the Thyroid Function Test 3 results may indicate reduced TSH levels and elevated FT4 or FT3 levels. Common symptoms in pregnant women include nausea, weight loss, irritability, and anger.

3. Subclinical Hypothyroidism

Subclinical hypothyroidism is a mild form of hypothyroidism, usually associated with reduced iodine intake. Symptoms may include fatigue and decreased body temperature. Thyroid Function Test 3 results may show elevated TSH levels and decreased FT4 levels.

4. Hashimoto's Thyroiditis

Hashimoto's thyroiditis is usually associated with infections. Affected pregnant women may experience symptoms such as goiter and night sweats. The Thyroid Function Test 3 results may show elevated TSH levels, along with positive Thyroid Peroxidase Antibodies (TPOAb).

5. Pituitary Microadenoma

Pituitary microadenoma is usually associated with hormonal imbalances in the body and may cause symptoms such as headache and vision loss. Thyroid Function Test 3 results may show abnormally elevated TSH levels in pregnant women, with normal or decreased FT4 levels.

It should be noted that if a pregnant woman suspects she is unwell, she should promptly undergo relevant medical tests to avoid delaying treatment. Additionally, regular follow-ups are necessary to adjust treatment plans timely based on recovery progress.

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