CAOHC - Council for Accreditation in Occupational Hearing Conservation Practice Test
CAOHC Audiogram Review and STS 2
What is the OSHA-defined standard threshold shift (STS)?
Select your answer
A
An average shift of 10 dB or more at 2000, 3000, and 4000 Hz in either ear
B
A shift of 15 dB at any single frequency
C
An average shift of 5 dB across all frequencies
D
A shift of 25 dB at 4000 Hz only
Hint