Thyroid Function Profile with Fine-Needle Aspiration Cytology Guidance (Thyroid Biopsy Support)

What Does This Test Measure?

The test includes thyroid function markers (such as thyroid-stimulating hormone, free thyroxine, and potentially others) and may incorporate thyroid-specific antibodies to assess thyroid activity and potential autoimmune involvement. Imaging guidance (e.g., ultrasound) is used to direct the biopsy needle for precision.

Why Is This Test Ordered?

Your healthcare provider may order this test if you have a thyroid nodule detected on imaging, symptoms like unexplained goiter, or suspected thyroid dysfunction. The guidance helps ensure the biopsy is performed safely and accurately, while thyroid function markers provide context for your overall thyroid health.

How Is the Test Performed?

A fine-needle aspiration biopsy will be performed under ultrasound or other imaging guidance. Small tissue samples are collected for cytological examination. Simultaneously, blood samples are drawn to measure thyroid function markers and antibodies. Results are used to refine biopsy technique and interpret findings.

What Are the Possible Findings?

Findings may include thyroid hormone levels (e.g., TSH, free T4) to assess function, cytological results from the biopsy (e.g., benign, suspicious, or malignant cells), and antibody presence (e.g., thyroid peroxidase antibodies). These results help determine if further testing or treatment is needed.