TSH in perimenopause
An underactive thyroid can mimic menopause: fatigue, hair loss, mood, brain fog.
- Panel
- Thyroid
- LOINC
- 3016-3 (verified against loinc.org)
- US unit
- mIU/L
Why it's on the midlife checklist
The great mimic-check of midlife: an underactive thyroid produces fatigue, hair shedding, low mood, brain fog, weight change, and cold intolerance — a list suspiciously identical to the perimenopause one. TSH is how the two stories get told apart, which is why it appears beside so many symptoms in Perity.
Keeping the record
Log every TSH with its date, even the normal ones — 'checked and normal, twice, here are the dates' is itself clinically useful information that saves repeat testing.
Symptoms this lab gets asked about for
- Brain fog
- Anxiety
- Low mood
- Mood swings
- Forgetfulness
- Chills / cold flashes
- Palpitations
- Dizziness
- Shortness of breath
- Trouble falling asleep
- Joint pain
- Muscle aches
- Numbness / tingling
- Itchy skin
- Dry skin
- Hair shedding
- Low sex drive
- Fatigue
- Weight gain
- Swelling / fluid retention
- Constipation
Source
- Checklist adapted from the Menopause Empowerment Guide (Dr. Mary Claire Haver) — labs to discuss with your clinician, in addition to standard CBC/CMP.
Perity informs, never prescribes — decisions belong with you and your clinician.
Educational content, written and maintained by Perity (founder: EiEi), grounded in the sources cited on this page. It is not medical advice, and Perity never interprets your data or recommends treatment. Last reviewed 2026-07-09.
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