GrowerIQ's expert consultants help define your GPP & GMP quality system

GPP vs GMP for Cannabis Quality Assurance


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Sherry Ellen Slitts
Sherry has been active in the biotechnology industry since 2010. She is experienced in developing quality management systems and documentation for regulatory compliance under GMP guidelines. Her background in microbiology, cell biology, and aseptic processing provide a scientific context for cannabis production methods. Sherry has a passion for plant science, especially in the areas of tissue culture and bioactive compound extraction.

Does your quality system live up to GPP or GMP standards?

GPP vs GMP for Cannabis Quality Assurance

Recreational and medicinal cannabis is spreading through the US and Canada. This fantastic opportunity to expand cannabis businesses has producers, processors, packagers, and dispensaries wondering what quality assurance measures will need to be taken. Canada's former Access to Cannabis for Medicinal Products Regulations (ACMPR) and current Cannabis Act requires Licensed Producers to implement and adhere to Good Production Practices (GPP), but some producers are going a step further to voluntarily adhere to more stringent regulatory guidance in an effort to ensure they are producing the safest and most consistent cannabis possible.

What is GPP?

GPP stands for Good Production Practices. GPP has been the standard Canadian guidance that Licensed Producers (LPs) have followed. GMP, which stands for Good Manufacturing Processes, is another regulatory guidance that some producers are opting to institute. So what is the difference between GPP and GMP?

GPP requires producers to have a structured quality system that has steps to check for adherence to quality standards at each step of the manufacturing process. While GPP is the standard for Canada, LPs in Europe more often are required to follow GMP guidelines which requires producers to control environmental variables along with quality checks throughout the manufacturing process.

GMP systems specific to cannabis should also include more product testing to screen for THC and CBD levels, along with tests for microbial contamination, and screening for pesticides and heavy metals.

How GMP is Different from GPP

Both GPP and GMP require producers to have standard operating procedures, sanitation programs, and systems to track products and conduct recalls if necessary. Both systems are ways to ensure product safety, quality, and environmental protection, but GMP takes these steps further. GMP systems specific to cannabis should also include more product testing to screen for THC and CBD levels, along with tests for microbial contamination, and screening for pesticides and heavy metals.

Other Quality Regulation Guidance for Cannabis Production

In addition to GPP and GMP, there is another set of regulations called Good Agricultural and Collection Practices (GACP), that Europe applies to herbal medicinal products like cannabis. In the US, a version of GACP is Good Agricultural Practices (GAP) which serves the same purpose to ensure that plants used for medicine are grown and harvested in a way that harvested crops can be traced back to the seeds or mother plants used to grow or clone plants.

Does your quality system live up to GPP or GMP standards?
Dive deeper into GACP via the WHO resource:
WHO Guidelines on Good Agricultural and Collection Practices (GACP) for Medicinal Plants

Core Components of a Quality System

Regardless of which regulatory guidance a product falls under, they all have some common traits like using validated Standard Operating Procedures (SOPs), having a sanitation program, monitoring personnel, and ensuring the facility is designed to reduce risks and maintained in good order. In order to organize these programs and documents, a quality manual is generally employed to define the scope of those programs and practices.

Another common element to a quality system is a HACCP (Hazers Analysis and Critical Control Point) plan. A HACCP plan determines what points in the manufacturing process present risks, what those risks are, how to prevent them, and how corrective actions will be handled if there is an error or abnormality at a control point. Both the HACCP plan and quality manual are based off of guidance like GPP or GMP.

In the US, federal guidance cannot be enforced and producers couldn’t have a GMP or GPP registered facility because of the federal status of cannabis as a schedule I drug. Nonetheless, independent certifiers and consultants are starting to help producers who are voluntarily practicing regulatory guidance because they believe that quality does matter.

Why Quality Matters

Whether marijuana is being used medically or recreationally, consumers and patients deserve access to safe cannabis products that have known potency. Canada is leading the way in establishing regulatory guidance that support this need and many producers are willing to go the extra mile and take on GMP practices because they realize the value it has for consumers and patients.

In the US, cannabis was a legitimate medicine up until federal prohibition in the 1960s. The FDA received numerous proposals to reschedule cannabis but has denied those requests under the claim that they could not conclude cannabis had an acceptable level of safety, including having consistent and predictable potency and proof that it was free of contamination.

While independent certifiers in the US meet this claim by embracing lab testing and voluntary GMP and GPP practices, Canada is leading the way in showing how national regulations can adapt to cannabis to ensure cannabis is safe, consistent, and free of contamination.

Canada is leading the way in establishing regulatory guidance that support this need and many producers are willing to go the extra mile and take on GMP practices because they realize the value it has for consumers and patients.

Understanding the differences between GPP and GMP is critical to produce quality product. The differences can be complicated however, which is why it's so important to consult with an experienced Master Grower. For more information, and actionable tips from our Master Grower on how to improve your yields and processes, please visit our Seed for Success consulting program.


About GrowerIQ

GrowerIQ is a complete cannabis cultivation management platform, designed in partnership with Master Grower Shlomo Booklin. This is the first platform to integrate all facility systems, including sensors, building controls, QMS, and ERP, into a single simplified interface. The company built insights from Shlomo's 30+ years of agronomist experience right into the platform. GrowerIQ leverages proprietary machine learning technology to improve facility automation and provide cultivators with insights to improve quality and consistency. GrowerIQ is changing the way cultivators use software - transforming a regulatory requirement into a robust platform to learn, analyze, and improve crop performance.

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