Understanding thyroid hormones
Thyroid hormones regulate your metabolism and energy. Testing TSH, T4 and T3 shows how well your thyroid works.
- TSH measures stimulation level
- Free T4 indicates hormone production
- Free T3 shows active hormone
- Antibody tests flag autoimmune issues
Preparing for your test
Minimal preparation ensures accurate results. Follow these simple tips before your appointment patient.info.
- You do not need to fast
- Take medications as usual
- Inform us of iodine scans
- Mention if you are pregnant