What it measures
Thyroid Function Tests
Clinical significance
Free thyroxine (free T4) tests are used to help evaluate thyroid function and diagnose thyroid diseases, including hyperthyroidism and hypothyroidism. The test may also be used to help evaluate a patient with an enlarged thyroid gland, called a goitre.
The normal range for free T4 in adults is 0.8 to 1.8 ng/dL or 12 to 30 pmol/L.
High levels of any of these tests (total T4, free T4, or free T4 index) may indicate an overactive thyroid, also known as hyperthyroidism.
Low levels of any of these tests (total T4, free T4, or free T4 index) may indicate an underactive thyroid, also known as hypothyroidism.
Your doctor may suspect that one of these conditions is present if you have symptoms such as: eye issues (dryness, irritation, puffiness, and bulging), skin dryness or skin puffiness, hair loss, hand tremors, changes in heart rate, changes in blood pressure. You may also experience more general symptoms, such as: weight changes, difficulty sleeping or insomnia, anxiety, fatigue and weakness, intolerance to cold, sensitivity to light, menstrual irregularity.
Real ratings and reviews from the Healsens app on the App Store and Google Play.
That's when I turned to a nutritionist and ordered a blood test through Healsens. … Four months later, I retested. My biological age dropped to 24—nearly a decade younger than my real age.
Read on App Store →It helps me track main parameters, understanding what do they mean and correlations, and make critical analysis to make preventative changes. Hope too see new fichas soon!
Read on App Store →Everything is great! Excellent app! It's very convenient for storing all your test results! The only thing I wish was that you could record blood pressure readings for both arms, as this is sometimes important for blood pressure monitoring.
Read on Google Play →A useful app. It motivates me to lead a healthy lifestyle and monitor my diet. After the test results, I decided to change my diet – I cut out flour and chocolate. I lost 2 kg in about a week. We'll see how the test results look over time.
Read on Google Play →
