Cannabis testing methods and standards.
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When you see this PTWC logo on the package of a cannabis product, it means the product was tested for the presence of pesticides by Confidence Analytics, a Certified Cannabis Testing Laboratory. This is your indication that the product has undergone rigorous laboratory analysis to provide accurate labeling and ensure the product is free of excessive pesticide residues.
The Confidence Cannabis Testing Analytical Lab is excited to announce that our extended cannabinoid analysis method is ready to launch! For all Washington State customers testing flower and concentrates, you will now start to see results on your Cannabis Certificate of Analysis (COA) for:
The WSLCB has opened up a CR101 rulemaking regarding pesticide testing. Public comment period is now. The LCB have outlined the reasons for this rulemaking, which include:
We are very excited to announce that Confidence Analytics is expanding its operations beyond the borders of Washington state. Our lab is proud to be a leader in Washington for honest and consistent quality assurance services, with worldwide recognition for our outstanding science published in Nature magazine. We are excited to bring our institutional knowledge to the rest of the country and the world.
Going forward, we are changing our policy on uncured (wet) flower samples for pesticide testing: we are no longer able to accept them uncured.
Measurement of cannabinoid content, or “the potency test”, is frequently discussed in cannabis analysis. Many such methods have been developed in the past few years, but none have yet been rigorously validated and shown to work consistently with real cannabis samples of all types. Consequently, labs testing cannabis are each using different methods of analysis, and no standardized method has been universally adopted.
A study published in Scientific Reports titled The Cannabinoid Content of Legal Cannabis in Washington State Varies Systematically Across Testing Facilitys and Popular Consumer Products has highlighted the need for standardized laboratory methodologies in the legal cannabis industry. Authored by Nick Jikomes PhD (Principal Research Scientist with Leafly‘s Division of Data Science) and Michael Zoorob (Department of Government, Harvard University), and based on the complete I-502 dataset collected between the opening of Washington’s recreational cannabis market in 2014 through to May 2017, the study documents systematic differences in the cannabinoid content reported by different laboratories in the state. These differences persisted even after controlling for differences related to the producers, product types, or strain names of the samples being processed by each lab.
UPDATE 2018-5-25: We have added a QR Code label template to our client portal – now you can print your product labels with a QR Code!
We’re feeling rather spiffy here at Confidence right now – our shiny new website is up and running! We’ve revamped to focus on the 3 things people look for most when they come to our site: pricing, FAQs, and blog posts. Our contact page is more comprehensive, and you can get our location information from the bottom of any page, whether you are on desktop or mobile. The Frequently Asked Questions section is now fully searchable so you can find the answers you need quickly. And of course, if you use our main site as your jump-point to our client portal, you can still get there with the Client Login button at the top right of the screen (or in the main site menu for those of you on mobile).
Seems like a simple question, doesn’t it? Clearly both have the same value, but 24 is different from 24.0 – in terms of implied precision, or certainty of the last digit.