Audiogram Results

The audiogram reports may contain a message along with calculations used to determine levels of hearing.

Reported Results Calculations Used
Abnormal

Any value > 25 dB

Possible Shadow Effect

Absolute difference between left and right at any frequency > 59 dB

Mild hearing loss at low frequencies
  • 500Hz in the range 26 through 45 dB AND
  • 500Hz - 4000Hz > 5 dB AND
  • 500Hz - 6000Hz > 5 dB
Moderate hearing loss at low frequencies
  • 500Hz in the range 46 through 70 dB AND
  • 500Hz - 4000Hz > 5 dB AND
  • 500Hz - 6000Hz > 5 dB
Severe hearing loss at low frequencies
  • 500Hz > 70dB AND
  • 500Hz - 4000Hz > 5 dB AND
  • 5 500Hz - 6000Hz > 5 dB
Mild hearing loss at high frequencies
  • 4000Hz > 25 dB OR 6000Hz > 25 dB AND
  • 4000Hz + 6000Hz - 2*(500Hz) > 10 dB AND
  • (4000Hz + 6000Hz)/2 <= 45 dB
Moderate hearing loss at high frequencies
  • 4000Hz > 25 dB OR 6000Hz > 25 dB AND
  • 4000Hz + 6000Hz - 2*(500Hz) > 10 AND
  • (4000Hz + 6000Hz)/2 >= 46 dB AND
  • (4000Hz + 6000Hz)/2 <= 70 dB
Severe hearing loss at high frequencies
  • 4000Hz > 25 dB OR 6000Hz > 25 dB AND
  • 4000Hz + 6000Hz - 2*(500Hz) > 10 dB AND
  • (4000Hz + 6000Hz)/2 > 70 dB
Standard Threshold Shift
  • Average dB at 2000Hz, 3000Hz, 4000Hz
  • minus baseline average dB at 2000Hz,
  • 3000Hz, 4000Hz >= 10dB
OSHA 300 Reportable
  • Average dB at 2000Hz, 3000Hz, 4000Hz
  • minus baseline average dB at 2000Hz,
  • 3000Hz, 4000Hz >= 10dB AND
  • Average dB at 2000Hz, 3000Hz, 4000Hz >=
  • 25dB in the same ear(s) as the STS shift