You've probably seen the letters "COA" floating around on packaging, product pages, or that little QR code everyone tells you to scan before you buy. But what's actually in one of these things, and why should you care? We know transparency isn't a buzzword. It's the whole reason third-party lab testing exists in the first place. So, let's break down exactly what you're looking at next time you pull up a Certificate of Analysis.
What Is a COA?
A Certificate of Analysis (COA) is basically a report card for your product, except instead of grading homework, an independent third-party lab is testing exactly what's in that vape, pre-roll, or edible. No brand should be grading its own test. That's the whole point of going to a "third-party." A legit COA tells you the cannabinoid potency, confirms there's nothing nasty hiding in there, and proves the product is what the label says it is.
If a brand can't show you one, that's a red flag. Full stop.
The Main Sections of a COA (And What They Actually Mean)
Cannabinoid Potency
This is the headline number everyone looks at first: your THC, THCA, CBD, and other cannabinoid percentages. Here's the part people get wrong: THCA isn't the same as THC until it's heated. So if you're comparing a flower COA to a vape COA, you're not always comparing apples to apples. Look for both the raw THCA number and the "Total THC" calculation, which estimates what you'll actually get once it's decarbed (aka heated up).
Pesticide Screening
This section confirms the product was tested for common agricultural pesticides and came back clean, or flags it if it didn't. Cannabis and hemp are bioaccumulators, meaning they soak up whatever's in the soil and water around them. A clean pesticide panel means what you're inhaling isn't bringing along anything extra.
Heavy Metals
Same logic as pesticides, plants pull heavy metals (think lead, arsenic, mercury, cadmium) from their growing environment. This section confirms the levels are within safe limits, which matters more for anything you're heating and inhaling directly.
Microbial & Mycotoxin Testing
This checks for mold, yeast, and other microbial nasties that can grow on cannabis if it's not cured or stored properly. Nobody wants surprise mold in their vape. This panel is your proof it's clean.
Residual Solvents
If a product went through any kind of extraction (live resin, distillate, diamonds — you name it), this section confirms there's no leftover solvent residue from the extraction process. This one matters most for concentrates and vapes specifically.
Terpene Profile (If Included)
Not every COA includes this, but when it does, it's basically the flavor and aroma breakdown. It shows the terpenes responsible for why your Legend OG tastes earthy and your Pink Guava tastes, well, like guava. Terpenes also play a role in how a strain feels, not just how it tastes.
How to Actually Check a COA Before You Buy
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Look for the batch number. A real COA is tied to a specific batch, not just slapped on generically across an entire product line. Match the batch number on your product packaging to the one on the COA.
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Check the test date. Cannabinoids degrade over time, so a COA from two years ago doesn't tell you much about what's in your hand today.
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Confirm it's from an accredited third-party lab. It should have a lab name and license info on it — not just a logo a brand made up.
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Make sure it's easy to find. If you have to dig for ten minutes or DM a brand on Instagram to find their lab results, that's a sign of how seriously they take transparency.
Why This Actually Matters
Look, we get it. Most people aren't trying to become amateur chemists every time they want to vape. But knowing how to read a COA means you're never just trusting a label at face value. You're making sure what you're putting in your body matches what's on the box, every single time. That's the bar we hold, and honestly, it should be the bar everywhere.
Final Thoughts
A COA isn't just paperwork. It's the receipt that proves a brand is actually doing what it says. Next time you're shopping (whether it's with us or anyone else), pull up the lab results before you pull out your wallet.
Curious what's actually in your LITTO products? Check out our Cannabis COAs and Hemp COAs — every batch, fully tested, nothing to hide.
FAQ
What does COA stand for?
COA stands for Certificate of Analysis, which is a lab report that verifies what's actually inside a cannabis or hemp product, including cannabinoid potency and contaminant screening.
Is a COA the same thing as lab testing?
A COA is the document that summarizes the results of lab testing. The testing is the process; the COA is the proof.
Why do cannabis and hemp products need third-party lab testing?
Third-party testing means the lab has no financial stake in the brand's results, so the numbers are independently verified rather than self-reported. This protects consumers from inflated potency claims or undisclosed contaminants.
What's the difference between THCA and Total THC on a COA?
THCA is the raw, non-psychoactive compound found in unheated cannabis. Total THC is a calculated estimate of what the THC content becomes once the product is heated, and decarboxylated, through smoking, vaping, or baking.
How do I find the COA for a LITTO product?
Every LITTO product is tied to a batch-specific COA, available on our Cannabis COA and Hemp COA pages.
What should I do if a brand doesn't provide a COA?
Treat it as a dealbreaker. A brand that can't or won't provide current, batch-specific lab results shouldn't be trusted with what you're putting in your body.
Disclaimer: This article is intended for informational purposes only and is not intended as professional medical advice, diagnosis, or treatment. If you are thinking about incorporating cannabis and hemp derived products (delta-8 THC, delta-9 THC, CBD, etc) into your medicinal routine, please consult a healthcare professional. Do not stop taking any prescribed medications without first consulting your doctor.