Ask X3What does 49 CFR 40.162 (What must MROs do with multiple verified results for the same testing event?) require?
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Based on 49 CFR 40.162, the Medical Review Officer (MRO) must handle multiple verified results for the same testing event in the following practical ways, depending on the situation:
* One collection with multiple non-negative results: The MRO must report all of them to the Designated Employer Representative (DER). For example, if a single specimen tests positive for multiple drugs and is also a refusal to test, report all of those findings.
* Two separate collections sent to the lab:
* Both negative: Report the result as negative.
* One negative and one non-negative: Report only the non-negative result(s). (If the first specimen is negative but the second lab result is still pending, hold the first result until the second is received. If the first is non-negative, report it immediately without waiting for the second).
* Both non-negative: Report all non-negative results to the DER.
* Exception for invalid results: If any verified non-negative result is also invalid, the MRO must follow the procedures at § 40.159(g) instead.