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The Specimen
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The Specimen
The Specimen
Urine is the preferred sample for a number of reasons:
Drugs are concentrated in urine
Most drugs are excreted and detectable in urine
Drugs are detectable in urine for longer periods than in some other substances such as oral fluid
Published and legally accepted procedures are available for urine testing – AS/NZS 4308:2001
Oral fluid may provide useful information in some circumstances
Blood may be used to quantify certain drugs