Page 6 - Prescription for Crime Drug Testing

NOTES

 The known and unknown powders come in one strip with six pods of powder. Each pod contains
the same powder, either from a controlled substance sample or, in the case of the evidence
powder, collected from the crime scene. For easy distribution, cut or break the strip so that each
pod is separate, then hand out one pod to each group. Remind them to use a different spatula
for each powder.

 For extra enrichment, students may examine the powders under a microscope before adding
the liquids. This will allow them to make additional observations.

 The videos for this lab can be accessed on the website at www.LyleAndLouise.com. Visit the
“Downloads” page, create/login to an account, and register your product to download the
supplemental material for this module.

 In addition to the videos, there is a presentation called PDL_VIH_LL_DRT_Lab2_Solutions.pptx
that provides a walkthrough of the Lab 2 procedure.

6 THE MYSTERY OF LYLE AND LOUISE