Thyroid function test referral

A TFT evaluates hormone levels that reflect how well the thyroid gland is functioning.

• • TSH (Thyroid Stimulating Hormone)- indicates how strongly the thyroid gland is being stimulated.
  • Free T4 (FT4)- measures the level of available thyroid hormone in the blood.
  • Free T3 (FT3)- shows the active form of thyroid hormone in the bloodstream.

Together, these results are interpreted to assess overall thyroid function.

At a high level, a TFT can help detect or monitor thyroid-related issues.

• Underactive or overactive thyroid activity
• Thyroid hormone imbalances
• Changes in thyroid function over time
• Response to thyroid treatment or medication

Results are considered alongside other clinical information.

Call 000 or attend your nearest Emergency Department immediately if you or someone else experiences:

• Thyroid storm — sudden severe symptoms including extreme rapid heart rate, very high fever, confusion, or loss of consciousness in a patient with known hyperthyroidism
• Myxoedema coma — extreme drowsiness, very low body temperature, or loss of consciousness in a patient with known hypothyroidism
• Severe irregular heartbeat or chest pain associated with thyroid symptoms

Do not book a telehealth referral for these presentations.

A thyroid function test referral via Hola Health is appropriate for routine thyroid screening, monitoring of known thyroid conditions, or investigation of non-emergency symptoms such as fatigue, weight changes, or temperature sensitivity. If you are unsure whether your symptoms require emergency care, call 000 — it is always safer to seek immediate help than to delay.

Preparation for a TFT is usually simple.

• Fasting is not usually required.
• Take medications as advised by your doctor
• Inform your doctor about supplements, especially iodine or biotin
• Try to get repeat tests done at the same time of day for consistency.

Your GP will inform you if any specific preparation is needed.

Tip: It’s best to check with your telehealth GP during your consult about preparation and next steps for a thyroid function test.

While TFTs are quite beneficial, they have some limitations.

• Illness or medications can affect results
• Temporary changes may occur
• Results need to be considered alongside other health information

Proper use of TFTs supports safe and informed care.