· Mimi · Health  · 1 min read

TSH Blood Test

What the TSH test checks, normal ranges, and thyroid health implications.

TSH is produced by the pituitary and controls thyroid hormone release.

  • Normal range: ~ 0.4–4.0 µIU/mL
  • High TSH: hypothyroid (slow thyroid)
  • Low TSH: hyperthyroid (overactive thyroid)

Always consider T3, T4, symptoms, and clinical context.

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