Cannabis and hemp testing sampling

Green Leaf Lab performs all sampling in a manner consistent with state rules and regulations, and internal laboratory protocols. Samples submitted for state compliance testing requirements are representative and randomly pulled from the complete source batch at your facility by our local account managers.

What is representative sampling?

Representative Sampling is the process of systematic and random sampling, designed so that samples can be proportionally pulled from any portion of the batch or process lot.  Utilizing a grid system and random number generator, it minimizes any potential errors in the sampling process. Compliance sampling can only be performed by personnel employed by an accredited and licensed laboratory. Sampling is the first step in lab analysis and essential to ensuring the final reports accurately represent the entirety of the batch. Documentation plays a key role as it lays out the plan for representative sampling, needed to validate the final report for compliance.


12025 NE Marx St
Portland OR 97220
Hours: Mon-Fri 9am-5pm

California — 916-924-5227


OLCC License 10029074C70

Now serving: Oakland, Santa Rosa, San Jose, San Francisco and Santa Cruz

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