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
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 Free T4?
Free T4 (thyroxine) is an essential hormone produced by the thyroid gland. It plays a crucial role in regulating your metabolism and energy use, and affects virtually every organ in the body.
Why should you have Free T4 tested?
Testing free T4 is useful for assessing thyroid function. It is particularly helpful for diagnosing hyperthyroidism or hypothyroidism, monitoring thyroid health in people taking thyroid medication, and evaluating overall metabolic health.
What does it indicate?
The Free T4 test measures the amount of free T4 hormone in the blood. It provides insight into how well the thyroid gland is functioning.
What does a high Free T4 level mean?
A high level of free T4 may indicate hyperthyroidism, a condition in which the thyroid gland produces too much hormone. This can lead to symptoms such as weight loss, rapid heartbeat, nervousness, and excessive sweating.
What does a low Free T4 level mean?
A low level of free T4 may suggest hypothyroidism, where the thyroid gland does not produce enough hormone. This can result in symptoms such as weight gain, fatigue, dry skin, and sensitivity to cold.
Frequently asked questions
Answers to what people usually want to know.
How does the home test work from A to Z?
After ordering we ship the collection kit to your home. You prick your fingertip, collect a few drops of blood, return it in the envelope, and receive your result digitally by email.
How do I collect my blood sample?
A small prick on your fingertip lets you collect a few drops into a tube. The instructions include step-by-step photos and video, so no guessing required.
How do I return the sample?
In the included return envelope with free shipping. Just drop it in the mailbox; the lab processes your sample as soon as it arrives.
