What is the correct frequency order for BC threshold measurement?

The correct frequency order for bone conduction (BC) threshold measurement begins with 1000 Hz, which is often considered a reliable starting point due to its significant representation of conversational speech frequencies. Following 1000 Hz, 2000 Hz and then 4000 Hz are typically tested as they progressively assess higher frequency responses which can impact understanding of speech, particularly in noise. Retesting 1000 Hz ensures that the data gathered remains consistent and accurate, which is critical in audiometric assessments. The inclusion of 500 Hz and 250 Hz at the end helps to evaluate the lower frequency thresholds, completing the audiometric profile necessary for a comprehensive evaluation of hearing.

This sequence reflects established audiological practices that aim to ensure both comprehensive coverage of auditory capabilities across different frequencies and reliability in data collection for the hearing aid fitting process. The rationale for testing the higher frequencies earlier is to observe potential configuration of hearing loss while retaining the information needed to inform patient management effectively.