Do I need to fast before a thyroid function test?

No, fasting is generally not required before a thyroid function test (TFT). You can eat and drink as usual unless your doctor has ordered additional tests that require fasting, such as a lipid profile. However, it’s important to take the test at the same time of day each time, as thyroid hormone levels can fluctuate slightly throughout the day. Always follow your healthcare provider’s specific instructions before the test to ensure accurate results.