Thyroid Function Test
Blood test to assess thyroid gland function.
The thyroid gland regulates metabolism throughout the body, and thyroid function tests measure hormone levels to check whether it is working normally, overactive, or underactive. Thyroid problems can contribute to a range of symptoms, including some that overlap with musculoskeletal complaints such as fatigue and muscle aches.
Types
TSH Test
Measures thyroid-stimulating hormone, usually the first and most useful screening test for thyroid function.
Free T3 and T4 Testing
Measures active thyroid hormone levels directly, often used alongside TSH for a fuller picture.
Thyroid Antibody Testing
Used when an autoimmune thyroid condition is suspected.
Common Causes
Thyroid testing is generally requested when symptoms suggest possible thyroid dysfunction, or as part of investigating certain other conditions known to be linked with thyroid problems.
- Symptoms suggestive of an underactive or overactive thyroid.
- Unexplained fatigue, weight change, or mood changes.
- Investigating certain musculoskeletal symptoms, such as frozen shoulder, which has a recognised link to thyroid disorders.
- Family history of thyroid disease.
- Routine screening as part of a general health checkup.
Signs and Symptoms
- Unexplained fatigue or weight change
- Feeling unusually cold or hot compared to others
- Changes in heart rate, mood, or energy levels
- Muscle aches or joint stiffness in some cases
- Hair or skin changes
Diagnosis
A blood sample is taken to measure thyroid hormone levels, with results interpreted alongside the clinical picture to determine whether thyroid function is normal or needs further attention.
Treatment Approach
Abnormal results are typically referred for appropriate management of the thyroid condition itself, while normal results help rule out the thyroid as a contributing factor to the symptoms being investigated.
Please note: This page is for general information only and does not replace a proper medical evaluation. Every case is different, and the underlying cause of your symptoms may not match what is described here. Please do not use this page to self-diagnose - consult Dr. K. G. Gopalakrishna or another qualified orthopaedic specialist for an accurate diagnosis specific to you.
← Back to OPD & Diagnostic Services
Last reviewed: August 2026