Potency Testing in Cannabis Extracts Using a High Throughput Method with the Cannabis Analyzer for Potency

Significance of the Topic

Cannabis potency testing is essential for both medical and recreational applications to ensure consistent dosage, regulatory compliance and to guide therapeutic use. Accurate quantitation of THC, CBD and related cannabinoids supports patient safety and market transparency.

Objectives and Overview of the Study

The study demonstrates a high-throughput HPLC method using the Shimadzu Cannabis Analyzer for Potency. It aims to quantify key cannabinoids (THCA, CBDA, THC, CBD, CBN, CBG, CBC and others) in under eight minutes with reliable accuracy across a broad dynamic range.

Methodology and Instrumentation

Sample preparation involved extraction of dry cannabis flower followed by dilution to fit calibration ranges. Separation was achieved on a C18 reversed-phase column using a gradient of acidified water and acetonitrile, delivering baseline resolution in under eight minutes.

• Shimadzu HPLC system configured as the Cannabis Analyzer for Potency
• C18 reversed-phase column
• Mobile phase: acid-modified water and acetonitrile gradient
• UV detection at appropriate wavelengths for cannabinoid peaks

Key Results and Discussion

Calibration curves for ten cannabinoids exhibited linearity with correlation coefficients above 0.999. The quantitation range extended from 0.5 to 100 mg/L for most analytes and up to 250 mg/L for THCA and CBDA. Accuracy was within ±10% at low concentration levels and within ±3% at mid and high levels. Chromatographic separation was completed in under eight minutes. Analysis of a THC-rich cannabis flower yielded 3.90% THCA, 2.28% Δ9-THC and an overall calculated potency of 5.7%.

Benefits and Practical Applications

• High throughput enables rapid sample turnaround in quality control laboratories
• Wide dynamic range accommodates both trace and abundant cannabinoids
• Robust accuracy and precision meet regulatory standards
• Streamlined workflow reduces operator time and potential errors

Future Trends and Opportunities

Future developments may include expanding to minor cannabinoids and terpenes, coupling with mass spectrometric detection for enhanced specificity, automating sample preparation for higher reproducibility and developing portable or in-line systems for real-time process monitoring.

Conclusion

The high-throughput HPLC approach using the Shimadzu Cannabis Analyzer for Potency offers a reliable, fast and precise solution for cannabinoid quantitation. Its performance characteristics and ease of operation make it well-suited for modern analytical laboratories addressing diverse cannabis testing needs.