The Emerald Test™, an Inter-Laboratory Comparison Proficiency Test, 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™ 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.