


TSH (Thyroid-Stimulating Hormone) and Free T4 (thyroxine) are biomarkers that assess thyroid function. TSH is produced in the pituitary gland and stimulates the thyroid to produce T4, which is essential for regulating metabolism.
Testing TSH and Free T4 is useful for assessing your thyroid health. It is especially helpful when you experience symptoms that may indicate a thyroid disorder, such as fatigue, weight changes, or mood swings.
A TSH + Free T4 test can show whether your thyroid is too active (hyperthyroidism) or not active enough (hypothyroidism). It provides a clear picture of how your thyroid functions.
A high TSH level may indicate hypothyroidism, where the thyroid gland does not produce enough hormones. This can lead to symptoms such as weight gain, fatigue, and sensitivity to cold.
A low TSH level may indicate hyperthyroidism, where the thyroid gland produces too many hormones. This can cause symptoms such as weight loss, palpitations, and nervousness.
Answers to what people usually want to know.
After ordering we generate a referral letter and email you the instructions. You pick a collection point yourself and book an appointment there. Blood is drawn at the location, processed at the lab, and your result arrives digitally.
Usually very quickly. Collection points typically have slots within a few days, sometimes even same-day. It depends on how busy the location is. For a few specialist analyses we first ship collection materials, which takes a bit longer.
At most collection points yes. Some accept walk-ins. This is clearly indicated per location. You choose the location that works best for you.
TSH and free T4; for thyroid function assessment.



€35.95EUR
That depends on the test. Whether fasting is required, and from what time, is clearly stated in the instructions you receive after ordering. No surprises at the counter.
It varies per analysis: from same-day to a few working days. Standard values often come back quickly; analyses that go to an external lab can take a bit longer. You get an email with a link to your digital result, including a short explanation per value.
We work with 1,000+ collection points across the Netherlands. After ordering you'll see which locations near you are available and you pick where you'd like to go.
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