Free T3 (FT3) (fingerstick)

Free T3; for thyroid function.

Loading...

€19.95EUR

Collection at test locationN/A
Home test kit delivery

€5.95EUR

Costs are per order

  • TrustPilot 4.6/5 sterren
  • No GP referral needed
  • Reviewed by BIG-registered physician
  • ISO 15189 Certified laboratory
  • At-home fingerstick collection
  • Order today, ships today
iDEALPayPalKlarnaMastercard

Fingerstick at home – no collection point needed

  • You receive a fingerstick kit with clear instructions
  • Easily collect a few drops of blood yourself
  • Return via medical mail to the lab

What is FT3?

Free Triiodothyronine, abbreviated FT3, is a thyroid hormone in the blood that is essential for regulating metabolism, heart function, digestion, and brain development.

Why should you have FT3 tested?

Testing FT3 is useful for evaluating thyroid function. It is particularly helpful in diagnosing hyperthyroidism or hypothyroidism, especially if other tests, such as those for TSH or FT4, show abnormal results.

What does it indicate?

FT3 levels provide information about how active the thyroid gland is. It helps in diagnosing thyroid diseases and monitoring the treatment of thyroid disorders.

What does a high FT3 level mean?

A high FT3 level may indicate hyperthyroidism (an overactive thyroid gland), which can lead to symptoms such as weight loss, palpitations, increased anxiety, insomnia, and hand tremors.

What does a low FT3 level mean?

A low FT3 level may indicate hypothyroidism (an underactive thyroid gland), which can result in symptoms such as weight gain, fatigue, depression, cold intolerance, and dry skin.