How To Verify The Cannabis Lab Found On The COA

Reviewed by: Bryan Doner, MD, & Cannabidiol Life’s Medical Review Team

INTRODUCTION:

Learn how to verify cannabis testing laboratories using official DEA licenses, state databases, and ISO certifications. This comprehensive guide helps you ensure your Certificate of Analysis (COA) comes from a legitimate, accredited laboratory.
Female lab technician in a cannabis testing laboratory, wearing safety goggles and a white lab coat, closely examining a Certificate of Analysis (COA) in her hands. Laboratory equipment is visible in the background alongside a vibrant cannabis plant, highlighting the setting’s focus on cannabis testing and analysis.

Table of Contents

Verifying the legitimacy of a cannabis testing laboratory is a crucial step in ensuring product safety and compliance. This guide walks you through three primary methods to verify cannabis testing laboratories, helping you make informed decisions about your cannabis products.

With all three methods, we will be focusing our attention to the “FOOTER” of the Certificate of Analysis; see the image below for reference.

Annotated image of a cannabis Certificate of Analysis (COA) by PharmLabs San Diego, highlighting the footer section at the bottom. The footer includes key compliance details like DEA and DCC license numbers, ISO accreditation, and lab contact information, as well as the authorized lab manager’s signature.

The first of the three methods will probably be the most inconvenient, so let’s get this one done first.

1. VERIFY THE DEA LICENSE NUMBER OF THE LAB

Image displaying the footer section of a cannabis Certificate of Analysis (COA) the DEA license number highlighted near the center of the footer section alongside other licensing and accreditation details.

Inconveniently, the DEA does not provide an online database, which would allow you the ability to authenticate any marketed DEA license number.

Therefore, to verify the validity and current status of a specific lab’s DEA license, you’ll need to call them directly; here’s the number to the DEA Registration Call Center:

Note: Have the lab’s full DEA registration/license number handy as you will need that to provide to DEA employee that you speak with on the phone.

2. State Licensing Authorities for Cannabis Labs

Close-up of the footer section on a cannabis COA by PharmLabs San Diego, showing the highlighted DCC license number 'C8-0000098-LIC' next to the DEA license number, ISO accreditation, and lab contact information.

Another way to verify the legitimacy of a lab is to use State-Level Databases.

Many states with legal cannabis industries maintain lists of approved and registered labs.

For example, in California, the Department of Cannabis Control (DCC) lists all state-licensed cannabis testing labs. These databases often include licensing numbers, including DEA accreditation details, if applicable.

Most labs have a DCC number at the bottom of their COA, so we recommend starting with this agency first.

However, if you do not see a DCC license number, we’ve gone ahead and provided the names with their website links in the table below to all cannabis state-licensing authorities.

STATE REGULATORY BODY URL
AL Cannabis is illegal; no state-level database for cannabis testing labs.
AK Alcohol and Marijuana Control Office (AMCO) Link
AZ Arizona Department of Health Services (ADHS) Link
AR Arkansas Department of Health (ADH) Link
CA Department of Cannabis Control (DCC) Link
CO Colorado Department of Public Health and Environment (CDPHE) Link
CT Department of Consumer Protection (DCP) Link
DE Delaware Department of Health and Social Services (DHSS) Link
DC Alcoholic Beverage Regulation Administration (ABRA) Link
FL Office of Medical Marijuana Use (OMMU) Link
GA Georgia Access to Medical Cannabis Commission (GMCC) Link
HI Department of Health (DOH) Link
ID Cannabis is illegal; no state-level database for cannabis testing labs.
IL Department of Agriculture (IDOA) Link
IN Cannabis is illegal; no state-level database for cannabis testing labs.
IA Department of Public Health (IDPH) Link
KS Cannabis is illegal; no state-level database for cannabis testing labs.
KY Department of Agriculture (KDA) Link
LA Department of Agriculture and Forestry (LDAF) Link
ME Office of Marijuana Policy (OMP) Link
MD Maryland Medical Cannabis Commission (MMCC) Link
MA Cannabis Control Commission (CCC) Link
MI Cannabis Regulatory Agency (CRA) Link
MN Department of Health (MDH) Link
MS Department of Health (MSDH) Link
MO Department of Health and Senior Services (DHSS) Link
MT Department of Public Health and Human Services (DPHHS) Link
NE Cannabis is illegal; no state-level database for cannabis testing labs.
NV Cannabis Compliance Board (CCB) Link
NH Department of Health and Human Services (DHHS) Link
NJ Cannabis Regulatory Commission (CRC) Link
NM Department of Health (NMDOH) Link
NY Office of Cannabis Management (OCM) Link
NC Cannabis is illegal; no state-level database for cannabis testing labs.
ND Department of Health (NDDoH) Link
OH Department of Commerce (ODOC) Link
OK Medical Marijuana Authority (OMMA) Link
OR Oregon Liquor and Cannabis Commission (OLCC) Link
PA Department of Health (DOH) Link
RI Department of Business Regulation (DBR) Link
SC Cannabis is illegal; no state-level database for cannabis testing labs.
SD Department of Health (SDDOH) Link
TN Cannabis is illegal; no state-level database for cannabis testing labs.
TX Department of Public Safety (DPS) Link
UT Department of Agriculture and Food (UDAF) Link
VT Cannabis Control Board (CCB) Link
VA Board of Pharmacy (BOP) Link
WA Liquor and Cannabis Board (LCB) Link
WV Office of Medical Cannabis (OMC) Link
WI Cannabis is illegal; no state-level database for cannabis testing labs.
WY Cannabis is illegal; no state-level database for cannabis testing labs.

3. Verify With The Accreditation Agency That Oversees ISO/IEC 17025 Certifications

Close-up image of the footer section on a cannabis COA from PharmLabs San Diego, focusing on the ISO/IEC 17025:2017 accreditation with the PJLA agency logo. Accreditation details are located alongside the DEA and DCC license numbers.

To be an accredited cannabis product lab testing facility, you must be ISO/IEC 17025 Certified

Below, you’ll find the names of the two agencies that oversee these certifications, along with links to their webpages that allow you to search their database:

  1. ANSI National Accreditation Board (ANAB)
  2. Perry Johnson Laboratory Accreditation (PJLA)
How do I know which ISO/IEC 17025 accreditation agency the cannabis lab was certified by?

At the bottom of the CoA, you will find either the PJLA or ANAB logo; this will tell you which ISO/IEC 17025 accreditation agency the cannabis lab is associated with.

Logo for the ANSI ANAB ISO/IEC 17025 Accreditation Agency.

Logo for the PJLA ISO/IEC 17025 Accreditation Agency.

Red Flags to Watch For When Reviewing Lab Credentials

When verifying a cannabis testing laboratory, be alert for these warning signs:

  • Expired or missing accreditation dates
  • Inconsistencies between state and federal licensing information
  • Missing or incomplete ISO/IEC 17025 certification details
  • Labs operating in states where they aren’t licensed
  • Certificates without proper accreditation logos or identification numbers

Summary

Verifying cannabis testing laboratories involves a three-pronged approach:

  • checking DEA licensing
  • confirming state-level registration
  • validating ISO/IEC 17025 certification.

While the process may seem complex, each step plays a vital role in ensuring the integrity of cannabis testing results.

By following this guide and maintaining vigilance for red flags, you can confidently verify the legitimacy of any cannabis testing laboratory listed on your COA.

DON'T BE SHY

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