TSH (thyroid-stimulating hormone) is commonly used to assess thyroid function in women, but it has well-known limitations. A single TSH value cannot reliably confirm euthyroid status; free T4, free T3, and antibodies (TPO, TRAb) are needed for a complete picture. Reference ranges vary by age, pregnancy, estrogen use, and circadian rhythm. Risks include overdiagnosis and unnecessary treatment: mildly elevated TSH (subclinical hypothyroidism) does not always require therapy—especially in older women, overtreatment with levothyroxine can increase risks of atrial fibrillation and bone loss. Conversely, low-normal TSH in young women with fertility desire may indicate hyperthyroidism. Guidelines (e.g., AWMF, ATA) recommend TSH as a screening test but mandate fT4 and clinical context for diagnosis. The provided context lacks specific TSH data; this answer is based on established clinical evidence. Caveat: No individual diagnosis without medical consultation.
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