| | Conditions Treatments | Thyroid Disease Is 1.21 a low thyroid level? No, 1.21 is not a low thyroid level. Normal thyroid levels range from 0.4 to 4.0 mIU/L, so 1.21 is within the normal range. Thyroid Disease - Related Articles How to Lose Weight And Tighten Skin How to Treat an Infection With Probiotics Symptoms of PMDD Are Fish Oil Capsules Good for Skin & Hair? HPV Laser Treatment How to Find an Affordable Dentist What artery is blood pressure normally taken from?
