You cannot reliably diagnose thyroid disease at home
Check for a new lump or swelling in the front of the neck
Look for trouble swallowing or breathing
Notice persistent hoarseness or voice changes
Watch for unexplained weight gain or weight loss
Watch for unusual fatigue or low energy
Watch for feeling unusually cold or unusually hot
Watch for constipation or frequent bowel movements
Watch for hair thinning or dry skin
Watch for a fast or slow heartbeat
Watch for tremors, anxiety, or restlessness
Watch for neck pain or tenderness
Use a home thyroid test kit only if available and approved in your area
Follow the kit instructions exactly
Arrange a blood test for TSH and free T4 with a healthcare professional
Seek urgent care if you have severe neck swelling, trouble breathing, or trouble swallowing