At what decibel level should pure tone testing begin?

Pure tone testing is a standard method used in audiometry to evaluate an individual's hearing sensitivity. The appropriate starting point for pure tone testing typically begins at a decibel level that ensures it is above the threshold of hearing for most individuals, allowing the audiologist to assess the hearing capabilities accurately.

Starting at 30 dB is particularly effective because it is generally above the average hearing threshold of normal hearing individuals. This level provides a clear baseline for determining if the individual can hear sounds at this intensity and higher, which is crucial for accurate assessment. If testing were to begin at lower levels, such as 20 dB, it might risk missing hearing impairments that could be present in the quieter ranges. Higher starting levels, like 40 dB or 50 dB, may not be suitable for all patients, especially those with normal or near-normal hearing, as it would bypass the assessment of lower levels of hearing initially.

Thus, 30 dB serves as an appropriate balance for establishing a reliable assessment point from which the hearing thresholds can be determined effectively.