What Does Low TSH Mean?

A low TSH means there is too much thyroid hormone circulating.

Common Causes

  • Graves’ disease
  • Toxic multinodular goiter
  • Toxic adenoma
  • Thyroiditis
  • Excessive levothyroxine
  • Early pregnancy

Symptoms

  • Rapid heartbeat
  • Weight loss
  • Heat intolerance
  • Tremor
  • Anxiety
  • Insomnia

Next Steps

  • Check free T4 and T3
  • Check TSI antibodies
  • Thyroid uptake scan
Source: American Thyroid Association, NLM MedlinePlus.

Ratings summarize government-reported measures — they don't capture your personal needs. Visit the facility, ask about staffing and services, and use CMS checklists. This profile is informational only and is not a recommendation.

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