Laboratory testing & validity

Initial and confirmatory drug tests, cutoff concentrations, validity testing (creatinine, pH, specific gravity, oxidant testing), HHS-certified laboratory requirements.

A laboratory scientist contacts an MRO to report that a primary specimen has been determined to be invalid due to the presence of an unidentified interfering substance. During this required consultation, what is the primary objective of the discussion between the laboratory and the MRO?

A.To determine if the donor has a documented medical condition that would explain the interference and allow for a negative result.

B.To authorize the laboratory to immediately test the split specimen (Bottle B) to see if the interference is also present there.

C.To provide the laboratory with the donor's prescription history to assist in identifying the specific interfering substance.

D.To decide if testing the specimen at a different HHS-certified laboratory would be useful in being able to report a positive or adulterated result.