Last updated: March 2026
Introduction
Hemp products are regulated differently from cannabis, but the distinction depends on measured chemical content rather than plant appearance.
Because regulations are frequently discussed online, understanding the federal definition of hemp helps customers interpret product listings and documentation more accurately.
This guide explains how federal law defines hemp and how classification is determined.
The Federal Definition of Hemp
Under United States federal law, hemp is defined by its Delta-9 THC concentration measured on a dry-weight basis.
If the measured Delta-9 THC percentage remains within the federal threshold, the material qualifies as hemp. If it exceeds that threshold, it falls under regulated cannabis categories.
This classification depends on laboratory testing rather than strain name or visual appearance.
You can review how testing works in our COA guide.
Why Laboratory Testing Matters
Because hemp classification is measurement-based, third-party laboratory documentation verifies whether a product meets federal criteria.
These reports show the measured cannabinoid values used for classification. You can view example lab reports.
Federal vs State Regulations
Federal classification does not automatically determine regulations in every location.
Individual states may establish their own rules regarding possession, transport, or sale. Customers should review local policies before ordering.
See our state legality guide for general reference.
Shipping and Documentation
Retailers commonly include documentation verifying classification during transport. This helps carriers distinguish compliant hemp from regulated cannabis categories.
Why Terminology Can Be Confusing
Hemp and cannabis come from the same plant species, but legal classification depends entirely on measured Delta-9 THC content rather than naming conventions.
Because of this, two products may look similar while falling into different legal categories based solely on laboratory results.
Final Thoughts
Federal law defines hemp using measured chemical thresholds verified through laboratory documentation. Understanding this distinction helps customers interpret product information more confidently.
Customers should also review local regulations before purchasing.