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TSH Levels: Reading an Overactive or Underactive Thyroid

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All NiaHealth tests are processed in Canadian-certified labs, which are highly trusted by the medical community for their accuracy and reliability. Blood and urine samples are collected by licensed medical professionals and processed using state-of-the-art equipment. NiaHealth is SOC2 Type 2 certified.

Thyroid stimulating hormone (TSH) regulates thyroid function. Abnormal levels can suggest a thyroid that is overactive or underactive. TSH levels are influenced by the pituitary gland response to thyroid hormone levels.

Included in membership

NiaHealth memberships include TSH testing twice a year, along with 60+ other biomarkers, at no additional cost.

Nurse Practitioner reviewed

Canadian-certified labs

SOC2 Type 2 certified

Why it matters

Reference ranges

Tanya ter Keurs
Clinically reviewed by  
Tanya ter Keurs
, NP · Last reviewed  
2026-08-05

This information is educational and does not replace medical advice, diagnosis, or treatment. Your results should be interpreted with a qualified healthcare professional in the context of your health history.