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Decoding the Details: A Step-by-Step Guide on How to Read a Certificate of Analysis Like a Pro

  • Writer: Grams BK
    Grams BK
  • Jun 8
  • 3 min read

Understanding a Certificate of Analysis (COA) is essential for anyone who wants to make informed decisions about cannabis products. Whether you shop at Grams Cannabis or another legal NYC dispensary, knowing how to read a COA helps you verify a product's quality, safety, and potency. This guide breaks down the key elements of a COA so you can confidently interpret the data and choose products that meet your needs.


Close-up view of a Certificate of Analysis document showing cannabinoid and terpene profiles
Detailed view of a cannabis Certificate of Analysis highlighting cannabinoid levels

What Is a Certificate of Analysis?


A COA is a lab report that shows the results of testing performed on a cannabis product. It provides detailed information about the product’s chemical makeup, including cannabinoid content, terpene profile, contaminants, and more. These reports come from third-party labs to ensure unbiased results.


The COA helps consumers verify that the product matches its label claims and is free from harmful substances. The COA confirms the THC and CBD levels, so you know exactly what you’re getting.


Key Sections of a COA to Understand


Cannabinoid Profile


This section lists the amounts of cannabinoids like THC, CBD, CBG, and others. The values are usually given as percentages or milligrams per gram. THC is the psychoactive compound, while CBD is non-intoxicating and often sought for wellness.


Look for:


  • Total THC: Indicates the potency and expected effects.

  • Total CBD: Useful for medicinal or calming effects.

  • Other cannabinoids like CBN or CBC can also be listed.


For example, a COA might show 18% THC and 1% CBD, meaning the product is primarily psychoactive with a small amount of CBD.


Terpene Profile


Terpenes are aromatic compounds that influence the smell, flavor, and effects of cannabis. The COA lists terpene types and their concentrations, usually in percentages or milligrams per gram.


Common terpenes include:


  • Myrcene: Earthy, musky scent; may promote relaxation.

  • Limonene: Citrus aroma; can elevate mood.

  • Pinene: Pine scent; may improve focus.


Understanding terpenes helps you pick strains that match your preferences beyond just THC and CBD levels.


Contaminant Testing


Safety is a top priority. The COA shows if the product has been tested for contaminants such as:


  • Pesticides

  • Heavy metals

  • Microbial contaminants (mold, bacteria)

  • Residual solvents (from extraction processes)


A clean COA means the product passed safety standards. If you detect any contaminants, it’s best to avoid that product.


Moisture Content and Weight


Some COAs include moisture content, which affects product freshness and shelf life. Weight verification ensures the product matches what you paid for, especially important when buying by grams.


How to Use a COA When Shopping


  1. Compare THC and CBD levels to find the right potency for your needs.

  2. Check terpene profiles to select flavors and effects you enjoy.

  3. Verify contaminant results to ensure product safety.

  4. Confirm product weight matches the label.

  5. Look for lab accreditation to trust the COA’s validity.


For example, if you visit us, Grams Cannabis, and want a relaxing strain with moderate THC, look for a COA showing balanced THC and CBD with calming terpenes like myrcene.


Common Misunderstandings About COAs


  • THC percentage is not the only factor; Terpenes and other cannabinoids influence effects.

  • Labels can be misleading; The COA is the most reliable source for product content.


Practical Example: Reading a COA

Imagine you pick up a cannabis flower from Grams Cannabis. The COA shows:


  • THC: 20%

  • CBD: 0.5%

  • Terpenes: 0.8% myrcene, 0.3% limonene

  • No pesticides or heavy metals detected

  • Moisture content: 10%


This indicates the product's potent psychoactive effect, slight CBD for balance, and a terpene profile that may promote relaxation and mood elevation. The clean contaminant results confirm safety.


Final Thoughts on Reading a COA


Knowing how to read a COA empowers you to make smarter choices when buying cannabis. Whether you prefer shopping at Grams Cannabis or any legal NYC dispensary, the COA reveals the truth behind product labels. Use it to check potency, flavor, and safety before making your purchase. Discover lab-tested, COA-ready products trusted and loved by your local community: https://dutchie.com/stores/gram-cannabis-dispensary/collections/grams-collection


 
 
 

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