Add-on
Free T4: What This Thyroid Hormone Tells You
All NiaHealth tests are processed in Canadian-certified labs, which are highly trusted by the medical community for their accuracy and reliability. Blood and urine samples are collected by licensed medical professionals and processed using state-of-the-art equipment. NiaHealth is SOC2 Type 2 certified.
Thyroxine, also known as T4, is a type of thyroid hormone. A T4 test measures the level of T4 in your blood. Too much or too little T4 can be a sign of thyroid disease.
Available as an add-on
T4 is part of our Advanced Thyroid Panel add-on, starting from $100.
Nurse Practitioner reviewed
Canadian-certified labs
SOC2 Type 2 certified
Why it matters
Reference ranges
This information is educational and does not replace medical advice, diagnosis, or treatment. Your results should be interpreted with a qualified healthcare professional in the context of your health history.
