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    Documents | Practical Considerations using Quantisal Oral Fluid Collection Devices and SPE Method Development by Polymeric Mixed-Mode Cation Exchange

    Practical Considerations using Quantisal Oral Fluid Collection Devices and SPE Method Development by Polymeric Mixed-Mode Cation Exchange


    Oral fluid is of increasing importance as a biological matrix in drugs of abuse and related analyte testing because of the ease of sample collection, and difficulty in adulteration of samples, particularly when compared with urine.

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