Independent cannabinoid research • Affiliate-supported
Guide

How to Read a CBD Certificate of Analysis

A practical checklist for matching a CBD product to its batch COA and reviewing cannabinoid and contaminant panels.

Reviewed: September 8, 2026 • Product details can change

Health context: This page compares product characteristics and merchant claims. It is not medical advice.

Match the batch

Confirm the lot number on the product matches the laboratory report.

Review cannabinoid results

Compare measured CBD, CBN, CBG and THC with the label.

Check contaminant panels

Where available, review heavy metals, pesticides, residual solvents and microbes.

Identify the laboratory

A useful report should identify the lab, sample, test date and relevant panels.