Elevated TSH Levels: A Database Study of General Practitioners' Course of Action

Area of Science:

• Endocrinology
• Primary Care Medicine
• Thyroid Disorders

Background:

• Elevated thyroid stimulating hormone (TSH) levels indicate potential thyroid dysfunction.
• Management strategies in primary care vary, necessitating investigation into current practices.

Purpose of the Study:

• To analyze general practitioners' actions following the detection of elevated TSH.
• To identify factors influencing repeat testing or levothyroxine initiation.

Main Methods:

• Retrospective study of adults with newly detected elevated TSH from a Swiss primary care database (2015-2020).
• Analysis of repeat TSH testing and levothyroxine initiation within 12 months.
• Assessment of associations with demographic and clinical variables.

Main Results:

• 34.3% of patients had repeat TSH testing; 12.4% initiated levothyroxine.
• Repeat testing linked to overt hypothyroidism and higher healthcare utilization.
• Levothyroxine initiation associated with higher TSH levels (>7 mIU/L), overt hypothyroidism, females, and nonurban settings.

Conclusions:

• Thyroid dysfunction severity drives follow-up, but gaps exist for younger patients and those with infrequent consultations.
• Potential overtreatment observed in women and patients in nonurban areas.
• Need for standardized guidelines for managing elevated TSH in primary care.