How to interpret a seven-item thyroid function test report

Nov 02, 2023 Source: Cainiu Health

Dr. Yang Ziqi

Introduction

Under normal circumstances, a seven-item thyroid function test requires evaluation of indicators such as triiodothyronine, thyroxine, thyroid-stimulating hormone (TSH), free thyroxine (FT4), and free triiodothyronine (FT3). Triiodothyronine, denoted as "T3", is the primary hormone that acts on various target organs. The normal reference range is 1.54–3.08 nmol/L.

Under normal circumstances, a seven-item thyroid function test requires evaluation of indicators such as triiodothyronine, thyroxine, thyroid-stimulating hormone (TSH), free thyroxine, and free triiodothyronine. The specific details are as follows:

1. Triiodothyronine: Represented as "T3", this is the primary hormone that acts on various target organs. The normal range is 1.54–3.08 nmol/L.

2. Thyroxine: Represented as "T4", this is the main hormone secreted by the thyroid gland. The normal range is 78.4–157.4 nmol/L.

3. Thyroid-Stimulating Hormone (TSH): Represented as "TSH", this hormone promotes the growth and development of the thyroid gland. The normal reference range is 0.3–4.5 mIU/L.

4. Free Thyroxine: Represented as "FT4", this is a sensitive indicator for assessing thyroid function in vitro. There are various measurement methods for FT4; if radioimmunoassay is used, the normal range is 9–25 pmol/L.

5. Free Triiodothyronine: Represented as "FT3", this hormone is synthesized and secreted by thyroid follicular cells. Normal ranges vary depending on the testing method. For radioimmunoassay, the normal range is 3–9 pmol/L.

If any of the above indicators are abnormal, it is recommended to consult a healthcare professional for further evaluation and management.

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