.A TSH level of 6.986 indicates mild hypothyroidism, and starting with a 75 mcg dose of levothyroxine (thyroxine) is a common initial treatment for many adults, depending on factors like age, weight, severity of symptoms, and other health conditions. The dose can be adjusted over time based on your response to the treatment. ### When to Retest: You should typically retest your TSH levels after **6 to 8 weeks** of starting the medication. This is because it takes about this long for your body to reach a new equilibrium on levothyroxine. Based on the results, your doctor may adjust the dosage if necessary. Always follow your doctor’s guidance, and notify them if you experience any side effects or symptoms.

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After 3 months.

Depends on ur body weight too.A repeat test after 3-6 weeks will decide