What must be kept as part of the licensee's permanent records regarding audiometer calibration?

• A. Records of calibration
• B. Purchase receipts
• C. Service contracts
• D. Employee training records

Answer: (A)

Maintaining records of audiometer calibration is required to be kept in the licensee’s permanent records. These records should document each calibration event, including the date, the calibration results, who performed the calibration, and when the next calibration is due. They prove the audiometer used for testing remains within specified tolerances, ensuring accurate hearing measurements and patient safety. This permanent log provides traceability for inspections and demonstrates ongoing compliance with professional standards. Other items like purchase receipts, service contracts, or employee training records may be kept for other purposes, but they do not replace the official calibration history that verifies the equipment’s accuracy.