Comorbid Laboratory Abnormalities in Female Pattern Hair Loss Patients

This study examined 356 female patients with female pattern hair loss (FPHL) to identify the prevalence of comorbid conditions using laboratory tests. The results showed high rates of zinc deficiency (41.7%), iron depletion (39.7%), and thyroid abnormalities (11.3%). Iron depletion and deficiency were more common in younger patients (<50 years). No significant differences in zinc deficiency or thyroid status were found between different age groups or FPHL severities. Routine testing for iron depletion, zinc deficiency, and thyroid diseases is recommended for FPHL patients due to the high comorbidity rates, while tests for testosterone, syphilis, and ANA are only necessary when clinically indicated.