Blood collection at collection point
- After your order you receive instructions by email
- Make an appointment at a collection point near you
- Blood collection at 1,000+ locations across the Netherlands
Blood collection at collection point
- After your order you receive instructions by email
- Make an appointment at a collection point near you
- Blood collection at 1,000+ locations across the Netherlands
- Receive your results digitally by email
What is TT4?
Total T4, or total thyroxine, is a hormone produced by the thyroid gland. It plays a crucial role in your metabolism and affects various bodily functions, including heart rate and body temperature.
Why should you have TT4 tested?
Testing TT4 can be useful if you experience symptoms suggesting a thyroid problem, such as unexplained weight changes, fatigue, or changes in heart rate. It helps in diagnosing thyroid conditions like hypothyroidism (too little thyroid hormone) or hyperthyroidism (too much thyroid hormone).
What does it indicate?
The TT4 test provides insight into the amount of thyroxine in the blood. Together with other thyroid tests, it can help assess the function of the thyroid gland and identify potential conditions.
What does a high TT4 level mean?
A high TT4 level may indicate hyperthyroidism, where the thyroid gland produces too much hormone. This can lead to symptoms such as weight loss, nervousness, palpitations, and increased body temperature.
What does a low TT4 level mean?
A low TT4 level may indicate hypothyroidism, where the thyroid gland does not produce enough hormone. Symptoms can include weight gain, fatigue, depression, and a low body temperature.
Frequently asked questions
Answers to what people usually want to know.
How does it work from order to result?
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.
How quickly can I get tested?
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.
Do I need to book an appointment?
At most collection points yes. Some accept walk-ins. This is clearly indicated per location. You choose the location that works best for you.
