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Levothyroxine monitoring — GPhC CRA MCQ

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ModerateEndocrine TherapeuticsLevothyroxine monitoringGPhC CRA

A GP increases levothyroxine from 50 micrograms to 75 micrograms daily. The patient asks when thyroid blood tests should be repeated. What monitoring is required?

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Correct answer: C — Check thyroid function after about 6 to 8 weeks

TSH responds gradually to changes in levothyroxine dose. Thyroid function is commonly reassessed after about 6 to 8 weeks following initiation or dose adjustment. The other tests do not monitor levothyroxine response.

Reference: BNF; NICE CKS