TSH (Thyroid-Stimulating Hormone)
TSH is the master regulatory hormone released by the pituitary to calibrate and direct thyroid gland activity.
Test your personal value
Enter the number from your lab report to instantly see how it compares to reference ranges.
Physiological Reference Ranges
The ranges below represent standard adult physiological values. Your laboratory's printed reference range always takes precedence.
0.4 – 4 mUI/L
0.4 – 4 mUI/L
0.4 – 4 mUI/L
What does a low result mean?
A slightly low TSH is often seen in early pregnancy, with certain medications, or during transient thyroid activation.
What does a high result mean?
A moderately elevated TSH above 4 mUI/L is very common and often temporary, showing the pituitary gently nudging the thyroid.
Questions ready for your doctor
Bring these questions to your next consultation to discuss with your healthcare practitioner:
- Does this suggest testing free T4 (FT4) to assess active thyroid output?
- Should we recheck in 6 to 8 weeks before deciding on any intervention?
- How do family thyroid patterns factor into my assessment?
Do you have a full blood test report?
Upload your lab document (PDF or image) to get an instant, clear explanation for every biomarker at once.
Important information — Medical notice
ScanMyLab is for informational purposes only. It does not provide a diagnosis and never replaces the advice of your doctor or laboratory.