Samples are checked to ensure chain of custody procedures have been followed. They are then screened to ensure accurate and reliable results.
Upon analysis of samples, required actions differ depending on the result:
The donor is cleared of having drugs or alcohol in their system
Presumptive Positive Results
This indicates the presence of a particular substance. In this case further analysis is required
This is carried out on presumptive positive results
If positive after confirmatory testing, a report will be written and will state which drugs were found and at what concentration