Historical Data Analysis

The Emerald Test™, an Inter-Laboratory Comparison Proficiency Test Program, has provided the means for analytical laboratories to measure and improve their testing methods, and consequently the accuracy of their test results, for 8 years. It is the longest running program of its kind and has enabled many laboratories to identify deficiencies, inform needed improvement, and demonstrate confidence in their analytics. 

The Emerald Test ILC/PT Program was first introduced in 2014 with a single cannabinoid test for ∆9 in solution. The initial round had 19 participants that listed 5 separate methods: GC-FID, GC-MS, LC-PDA, LC-UV Vis, and SFC-PDA.  Since that time, the growth in number of participants, available tests, matrices, and methods is only compounded by the overall sophistication and advancement of the science and the scientists in our industry. 

The 2024 Historic Pesticide PT Study

The systematic assessment of raw vegetative cannabis material, and products containing cannabinoids, by accredited analytical testing laboratories is a core safety and quality assurance component of medical and recreational cannabis programs.

The focus of this study was to conduct a retrospective examination of pesticide PT results from 339 PT’s collected from 2019-2023 rounds of The Emerald Test™.

Read the Study to explore our findings, and review their implications on the accurate identifiction and quantification of pesticides in cannabis products.
Historic Pesticide PT Study
Download the Study

The 2021 Report

In 2021, Emerald Scientific partnered with New Frontier Data to analyze the historical data from Emerald Test™ to share the progress of the industry and emerging stories for cannabis quality control labs with all stakeholders.

The result of this collaboration was a new study analyzing quality and safety testing across the cannabis industry. The report concluded that proficiency testing, the mainstay for compliance and quality assurance in the legal cannabis industry, represents a top priority and major share of the global cannabis testing service industry.

View Full Report Here


Another outcome of the Emerald Scientific – New Frontier Data collaboration was 2 webinars which each discussed important aspects of Cannabis Proficiency Testing. In these sessions, the panelists discussed what 7 years of proficiency testing data shows us about the evolution of the cannabis industry, and the importance of quality and consumer safety to its continued growth.
Watch: Why Quality Assurance is Good for Business
Watch: The New Industry Imperative for Quality and Consumer Safety

Interested in Participating in The Emerald Test™ ILC/PT Program?

The Emerald Test™ takes place in the Spring and Fall of each year, with enrollment open for a set period of time. After receiving the PT sample, participating labs have a specified time period to complete the test(s) and submit their results via an electronic data portal. 

For complete Program details, visit our How It Works page

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