Educational article

Thyroid: How to Interpret Altered Results in Thyroid Function Tests

Dr. Teresita Cortés Segura, medical reviewer

Dr. Teresita Cortés Segura, medical reviewer

Author and medical review: Dra. Teresita del Niño Jesús Cortés Segura, endocrinologist.

Location: Bogotá, Colombia.

Published: September 12, 2026 · Updated: September 12, 2026 · 6 min read.

Educational content. It does not replace an individual medical assessment and should not be used for self-medication.

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What is the thyroid and why is it important?

The thyroid is a gland in the neck that produces hormones regulating metabolism, growth, and development. Its proper function is vital for overall health.

Warning signs of thyroid problems

Symptoms of thyroid disorders can include fatigue, weight changes, sleep disturbances, and changes in skin or hair. These symptoms can be subtle, so it is crucial to be attentive to any changes.

Computer screen in a medical office showing thyroid test results, key for endocrinological diagnosis.
Thyroid test results in a medical office in Bogotá, essential for endocrinological diagnosis.

Common tests to evaluate the thyroid

The most common tests are measurements of TSH, T3, and T4. These tests help determine thyroid function and identify disorders.

Interpreting results: What do the numbers mean?

Results can vary; high TSH levels may indicate hypothyroidism, and low levels, hyperthyroidism. It is essential to discuss these results with a specialized physician.

Common errors in interpreting results

A frequent error is not considering the patient's clinical context. Results should be evaluated together with symptoms and medical history for an accurate diagnosis.

When to consult an endocrinologist?

It is advisable to seek medical attention if you experience persistent symptoms or abnormal results. An endocrinologist can provide an accurate diagnosis and treatment plan.

When to seek medical care

If symptoms persist, test results are abnormal, or you have questions about medication, arrange an individual assessment. Do not change treatment or doses without medical guidance.

Frequently asked questions

What tests are performed to evaluate thyroid function?

The most common tests are measurements of TSH, T3, and T4, which help determine proper thyroid function.

What should I do if my thyroid results are abnormal?

It is important to consult an endocrinologist to discuss the results and determine the next steps in diagnosis or treatment.

Are symptoms of thyroid problems always obvious?

Not necessarily. Symptoms can be subtle and vary between individuals, so it is crucial to be attentive to any changes in health.

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