What Are Normal TSH Levels?
Standard normal TSH is 0.4–4.0 mIU/L.
Standard Ranges
- Adults: 0.4–4.0
- Pregnancy T1: 0.1–2.5
- Elderly: may be higher
Optimal vs Normal
- Some prefer 0.5–2.5
- TSH rises with age
Factors Affecting TSH
- Time of day
- Stress
- Biotin supplements
- Medications
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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