BH04: A Global Survey to Assess Laboratory Testing Practices in Alopecia Areata by Hair Specialists

This study surveyed 130 dermatologists specializing in hair disorders from 14 countries to assess their laboratory testing practices for alopecia areata (AA). Despite international guidelines suggesting that investigations are unnecessary for asymptomatic patients, there is significant variability in practice. Over half of the respondents routinely performed screening for coexisting autoimmune illnesses, while a smaller percentage screened for nutritional deficiencies or alternative diagnoses like syphilis. Before initiating systemic therapies, most dermatologists ordered comprehensive blood tests, including liver and renal function, hepatitis, and HIV testing. The study highlights the diverse real-world practices among AA experts and suggests a need for renewed discussion on standardized testing protocols.