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High TSH (7.20) with normal T3/T4
28M. Recent blood test results:
• TSH: 7.20 (range 0.40–4.50) — high
• Free T4: 1.4 (range 0.8–1.8) — normal
• Free T3: 3.8 (range 2.3–4.2) — normal
So my TSH is high but my actual thyroid hormones (T3, T4) are still in range.
Symptoms: constant fatigue, low energy, low motivation, and I’ve been unable to lose weight despite trying.
My questions:
1. Is this “subclinical hypothyroidism”? How serious is it?
2. Does this needs any medication, and how long the medication will be for?
Answers (5)
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Yes, this looks like subclinical hypothyroidism — TSH elevated, but Free T4 and Free T3 still in range. That pattern means your pituitary is compensating to keep hormone levels normal, so your thyroid’s under some strain but not failing yet. At TSH 7.20, it’s generally mild, not an emergency, but worth taking seriously given your symptoms.
Next Steps
• Repeat the TSH in 6–12 weeks (single readings can be skewed by stress, illness, sleep, etc.)
• Ask for a TPO antibody test — this checks for Hashimoto’s (autoimmune thyroiditis), the most common cause, and helps predict if it’ll progress
• Bring up your fatigue/weight symptoms with your doctor directly, since they can have other causes too (iron, vitamin D, sleep, testosterone) worth ruling out
Health Tips
On medication: it’s not automatic at this level. Guidelines usually reserve levothyroxine for TSH >10, or 4.5–10 with symptoms/antibodies/risk factors. At 7.20 with symptoms, some doctors would trial low-dose treatment, others would recheck first — genuinely a discussion for your doctor, not a fixed answer. If started, it’s typically long-term, with periodic dose checks via TSH every 6–8 weeks initially, not a short course.
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Yes you have Hypothyroidism
Next Steps
Consult endocrinologist and Start Thyroxine supplementation
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Yes. This is hypothyroidism. Your TSH is mildly elevated and FT3 and FT4 are normal you are symptomatic.
So you can start Thyroid replacement.
May be 12.5mcg every day.
I would also suggest you to test your Vit D.
If low correct that as well.
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Its feature of hypothroidism
U need to start with thyroxine 25
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Dr. Jaimini Thakkar
ENT/ Otorhinolaryngologist
6 yrs exp
Anand
You have hypothyroidism.
Need to start with thyroid hormone supplement.
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Disclaimer : The content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding your medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.