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Otometrics
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Tests
The DPOAE test
REFER (Test referred)
Note · Retro-cochlear hearing loss cannot be detected by DPOAE testing.
The DPOAE result specifies each frequency tested. This facilitates decisions concern-
ing further procedures. A
PASS (Test passed) at a single frequency indicates near to
normal hearing in the specified band.
The major reasons for non-detection are too noisy test conditions or a poor probe fit.
In DPOAEs this is especially true for the lowest frequencies. Therefore, low fre-
quency
REFER (Test referred) with high frequency PASS (Test passed) is a strong indi-
cator that test conditions were not optimal. If this is the case, it is recommended that
you improve test conditions and repeat the test.
A PASS (Test passed) result indicates that the
patient has normal outer hair cell function in at
least 3 out of 4 different frequency regions of the
cochlea at the time of testing.
A single frequency PASS (Test passed) is deter-
mined by a statistical algorithm based on
weighted averaging, which ensures high-sensitiv-
ity detection.
If the result is a REFER (Test referred) , the
detailed results are shown immediately below the
graph.
A REFER (Test referred) result indicates that in at
least 2 frequency bands out of 4, no significant
DPOAE response could be detected.