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(a) As a laboratory, you must use the cutoff concentrations for the initial and confirmation adulterant testing as required by the HHS Mandatory Guidelines and you must use two separate aliquots – one for the initial test and another for the confirmation test.
(1) A substance that is not expected to be present in human urine is identified in the specimen;
(2) A substance that is expected to be present in human urine is identified at a concentration so high that it is not consistent with human urine; or
(3) The physical characteristics of the specimen are outside the normal expected range for human urine.
(b) As a laboratory, you must report results at or above the cutoffs (or for pH, at or above or below the values, as appropriate) as adulterated and provide the numerical value that supports the adulterated result.

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