Understanding Potency Testing Variability and Acceptable Ranges infographic

Understanding Potency Testing Variability and Acceptable Ranges

Why Two Labs Can Report Different Numbers

Building on the COA reading, AOAC, and full panel content discussed elsewhere in this publication, potency results are measurements, and every measurement carries some variability. Understanding that variability helps buyers interpret results sensibly.

Sources of Variability

Sampling. Product that is not uniform can give different results from different parts of the batch.

Method and equipment. Different validated methods and instruments can produce slightly different values.

Sample preparation. Extraction and dilution steps affect results.

Acceptable Ranges

Many specifications allow a tolerance around the labeled value, and standards for labeled versus measured potency vary by jurisdiction. A small difference between labs is not automatically a problem, but a large or consistent one deserves investigation.

How to Handle Differences

  • Compare methods, sample sizes, and reporting units before comparing numbers
  • Check homogeneity if results differ widely within a batch
  • Use a consistent lab for routine release, and a second lab for periodic cross-checks

Tie It to Labeling

Labeled potency should be supported by results and a reasonable tolerance, tying to the labeling content discussed in recent weeks.

Low Gravity Hemp documents methods and tolerances alongside potency results. Contact us to review how we report.

RELATED POST

Explore More
How Labs Detect Pesticide Residues: Methods and Coverage infographic
Low Gravity Hemp
How Labs Detect Pesticide Residues: Methods and Coverage
Understanding Cannabinoid Stability: Light, Heat, and Oxygen infographic
Low Gravity Hemp
Understanding Cannabinoid Stability: Light, Heat, and Oxygen
How Retailer Policies Interact With Labeling and Marketing Claims infographic
Low Gravity Hemp
How Retailer Policies Interact With Labeling and Marketing Claims
Introduction to Hemp Traceability Systems and Seed-to-Sale Records infographic
Low Gravity Hemp
Introduction to Hemp Traceability Systems and Seed-to-Sale Records
A Glossary of Hemp Compliance Terms Buyers Should Know infographic
Low Gravity Hemp
A Glossary of Hemp Compliance Terms Buyers Should Know

Education HUB

Data-driven insights for product developers and manufacturers. Explore our expert guides on ingredient chemistry, formulation strategy, manufacturing efficiency, and regulatory compliance to build better hemp-derived products.

Explore More
How Labs Detect Pesticide Residues: Methods and Coverage infographic
How Labs Detect Pesticide Residues: Methods and Coverage
How Labs Detect Pesticide Residues: Methods and Coverage
November 10, 2026 Low Gravity Hemp

How Labs Find Trace PesticidesBuilding on the pesticide limits and full panel testing content discussed elsewhere in this publication, the instruments used to find pesticide residues matter, because detecting trace amounts across dozens of compounds takes sophisticated analysis.The Two Main ApproachesLiquid chromatography with tandem mass spectrometry. Often used for compounds...

Understanding Cannabinoid Stability: Light, Heat, and Oxygen infographic
Understanding Cannabinoid Stability: Light, Heat, and Oxygen
Understanding Cannabinoid Stability: Light, Heat, and Oxygen
November 08, 2026 Low Gravity Hemp

Why Cannabinoids Change Over TimeBuilding on the stability, packaging migration, and potency variability content discussed elsewhere in this publication, cannabinoids are chemically active molecules, and their concentration can change after production. Understanding what drives that change helps explain results and shelf life.The Main DriversLight. Exposure, especially to ultraviolet light, can...

How Retailer Policies Interact With Labeling and Marketing Claims infographic
How Retailer Policies Interact With Labeling and Marketing Claims
How Retailer Policies Interact With Labeling and Marketing Claims
November 07, 2026 Low Gravity Hemp

Law Is Not the Only RuleEven when a claim is legally permitted, a retailer may have its own policy about what it will carry and how products can be described. Building on the FTC advertising, labeling, and buyer documentation content discussed elsewhere in this publication, retailer policies add a layer...

Introduction to Hemp Traceability Systems and Seed-to-Sale Records infographic
Introduction to Hemp Traceability Systems and Seed-to-Sale Records
Introduction to Hemp Traceability Systems and Seed-to-Sale Records
November 06, 2026 Low Gravity Hemp

Following Product From Source to SaleBuilding on the chain of custody, batch record, and mock recall content discussed elsewhere in this publication, a traceability system links every product back to its source and forward to its customers. Many states require tracking for certain licensed activities, and buyers increasingly expect it.What...