015-1 Wyo. Code R. § 1-8
(a) All bulk amount controlled substances, including its representative sample, shall be submitted for storage at the Division's evidence facility.
(b) Upon receipt of the submitted evidence, evidence facility personnel will notify the crime lab of the representative samples for which forensic analysis has been requested. Designated crime lab and evidence facility personnel will coordinate transportation of evidence to and from the lab for examination/analytical and/or storage purposes.
(c) The chain of custody shall be maintained.
(d) The crime lab shall test the representative samples using techniques widely accepted by the scientific community.
(e) A copy of the test results shall be placed in the master case file.
(f) Once testing of the representative samples has been completed, the samples shall be placed in the container in which originally submitted to the crime lab, and returned to the Division's evidence facility for storage with the bulk amount from which the samples were extracted.
015-1 Wyo. Code R. § 1-8