From The Lab
Quality Plans for Lab Services: Managing Risks as a Grower, Processor or Dispensary, Part 2

Editor’s Note: The views expressed in this article are the author’s opinions based on his experience working in the laboratory industry. This is an opinion piece in a series of articles designed to highlight the potential problems that clients may run into with labs. 


In the previous article, I discussed the laboratory’s first line of defense (e.g. certification or accreditation) when a grower, processor or dispensary (user) questions a laboratory result. Now let us look behind this paperwork wall to the laboratory culture the user will encounter once their complaint is filtered past the first line of defense.

It is up to the client (processor, grower or dispensary) to determine the quality of the lab they use.In an ISO 17025 (2005 or 2017) and TNI accreditation, the laboratory must be organized into management, quality and technical areas. Each area can overlap as in the ISO 17025-2017 standard or be required to remain as separate sections in the laboratory as in the ISO 17025-2005 or TNI 2009 standards. ISO 17025 standards (e.g. 2005 and 2017) specifically require a separation of monetary benefits for laboratory results as it applies to the technical staff. This “conflict of interest” (CoI) is not always clearly defined in the laboratory’s day-to-day practices.

One example that I have experienced with this CoI separation violation goes back to my days as a laboratory troubleshooter in the 1990s. I was called into a laboratory that was failing to meet their Department of Defense (DoD) contract for volatile organic hydrocarbon analyses (VOAs) of soil samples by purge trap-gas chromatography-mass spectroscopy. I was required to “fix” the problem. What I determined was:

None of the staff was technically competent to perform any in-depth VOAs analytical work nor was the clerical staff competent to certify the results reported.

When I pointed out these discrepancies to the laboratory management, they declined to make any changes. The laboratory management had a direct monetary interest in completing all analyses at the lowest costs within the time limit set by DoD. If the laboratory did not complete the analyses as per the DoD contract, DoD would cancel the contract and not pay the laboratory.

The DoD, in a “Double Blind” test sample, later caught this laboratory.. A Double Blind test sample is used to check to see if the laboratory is performing the tests correctly. The laboratory does not know it is a test sample. So if the laboratory is cheating, they will be caught.This does not mean that all laboratories have staff or management issues

Once the laboratory was caught by DoD with the Double Blind, laboratory management claimed they were unaware of this behavior and management fired all analytical staff performing VOAs and clerical staff reporting the VOAs results to show DoD that it was a rogue group of individuals and not the laboratory management. The fired staff members were denied unemployment benefits as they were fired with cause. So, the moral to this story is if the analytical staff and specifically the clerical staff had wanted to hold the laboratory management accountable for this conflict of interest, they may have been fired, but without cause. The staff would have kept their reputation for honesty and collected unemployment benefits.

I have witnessed the “CoI above repeatedly over the last 30+ years both in laboratories where I have been employed and as a consultant. The key laboratory culture problems that lead to these CoI issues can be distilled into the following categories:

So, what are the conclusions of this article?

The next article in this series will introduce the user to the specific Quality Control (QC) analyses that an acceptable laboratory should perform for the user’s sample. These QC analyses are not always performed by accredited laboratories as the specific state that regulates their cannabis program does not require them. The use of these QC samples is another example of how laboratory’s with poor quality systems construct another paper work wall.

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