PHYSICAL EVIDENCE MANUAL - Crime Scene Investigator Network

Physical Evidence Manual
Adopted: May 2002
Revisions: 6
Last Revision: January 31, 2008
7.0 CONTROLLED SUBSTANCES
Controlled substance analysis is the identification of specific chemicals that are
designated as controlled by the Oregon Administrative Rules. This analysis
applies to the testing of powders, tablets, capsules, plant material, and drug
paraphernalia. Clandestine laboratory samples are also analyzed to determine
the method being used to manufacture the illegal drug and the possible drug
yield given the quantity of chemicals and precursors seized.
Analysis of Controlled Substances
• Identification of controlled substances only. In general, non-controlled
substances are not identified.
• Analysis is qualitative only. Oregon law requires only the presence of a
controlled substance, not its purity.
• Quantitative testing is performed for federal sentencing in
methamphetamine cases only.
Submission Policies
Each laboratory limits analysis to two items per defendant, so the investigating
officer should use discretion and submit only those two items that are essential to
the case. Exceptions can be made by District Attorney’s Office request to the
laboratory. In cases with multiple suspects, an indication should be made as to
what evidence belongs to which suspect.
Large seizures of over a kilogram of powder or large amounts of marijuana
should not be submitted directly to the laboratory. A small sample of the material
should be removed, packaged, and submitted for analysis. Laboratory personnel
can assist with the weighing of large submissions, however, the officer must
maintain possession of the evidence. A small sample will be retained by the
laboratory for analysis.
Syringes, razors, and other sharp objects (“sharps”) will not be accepted unless
the District Attorney’s Office has given notice of their intent to prosecute the
case. All sharp objects should be separated from other evidence that requires
analysis.
Approved sharp objects that are submitted for analysis must be packaged in
such a manner as to protect personnel during handling. The packaging must be
protective enough to ensure no possibility of being injured or punctured.
Commercially manufactured puncture-proof (“sharps”) containers are available
for purchase. Contact your local laboratory for information.
7-1