Verywell Health on MSN1y
TSH Levels Test: What Do High and Low Levels Mean?TSH levels higher than 4.5 mU/L usually indicate an underactive thyroid (hypothyroidism), and low TSH levels—below 0.4 ...
Verywell Health on MSN1y
Can You Have Hypothyroidism With Normal TSH Levels?Medically reviewed by Kelly Wood, MD If you have hypothyroidism with normal TSH levels, you may still experience symptoms ...
Serum concentration rises in pregnancy, producing an enlarged thyroid without clinical symptoms of goiter ... is evaluated if TSH is abnormally high or low. Low TSH with a high FT4 or FT4I ...
Intermittent or non-compliance with levothyroxine (L-T4) replacement therapy will result in discordant serum TSH and FT4 values (high TSH/high FT4) because of a persistently unstable thyroid state ...
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