How to Read a Pet CBD Lab Report
Cross-species

How to Read a Pet CBD Lab Report

A certificate of analysis is a test result from an independent laboratory saying what is actually in a product. Every reputable pet CBD brand publishes them, and almost nobody reads them, because at first glance they look like a wall of numbers.

By Sarah Miletich , BS Organic Chemistry, MS Cosmetic Science Veterinary review pending 5 min read

They are not complicated once you know which four things to look at. Here is how to check one in about two minutes.

The four things that matter

1. Does it match the product you are holding?

Start here, before any of the numbers.

Lot or reference number. It should match the lot number printed on your bottle. A certificate for a different lot is a certificate for a different bottle of liquid.

Product name. It should be the product you bought, not a general company sample.

Date. Recent matters. A certificate from three years ago is not evidence about a bottle made last month.

Laboratory name, and it should not be the brand. Third-party means somebody else did the test. A brand testing itself and calling the result third-party is the most common form of this going wrong.

If any of those four do not line up, nothing further on the certificate matters.

2. Potency: is the CBD actually there?

This section lists cannabinoids and how much of each was found.

Find CBD and compare it to the label. If the bottle says 300mg and the certificate says something meaningfully different, the label is wrong.

Certificates report this in different units, which is where people get lost. Some show a percentage, some show mg per mL, some show mg per container. The one that answers your question is whatever lets you compare against what the label claims. If the units make it impossible to compare, that is itself a finding.

3. THC: this is the one that matters for an animal

For a pet product, this is the single most important line on the page.

Animals do not process THC the way people do, and THC exposure is a well-recognised reason pets end up in emergency veterinary care. For an animal, “under the legal limit” is a human legal threshold applied to a much smaller body.

What you want to see: THC reported as not detected, or below the laboratory’s limit of detection, usually written as ND or LOD.

What should worry you: a THC figure that is present but small and described as acceptable, or a certificate that reports total cannabinoids without breaking out THC separately.

Proof Pets CBD Drops are THC-free, and Proof publishes Test results so this line can be checked rather than taken on trust.

4. Contaminants: what else got in

Potency tells you the good thing is present. This section tells you the bad things are not. A certificate that reports only potency is half a certificate.

The panels to look for:

Panel

What it screens for

Heavy metals

Lead, arsenic, cadmium, mercury. Hemp draws metals out of soil, so this is not a formality

Pesticides

Residues from cultivation

Residual solvents

Left over from extraction, depending on method

Microbials

Bacteria, yeast, mould

Mycotoxins

Toxins produced by moulds

Each should show a pass or a result below the action limit.

Why this matters more for an animal than for you. Contaminant limits are generally set with an adult human in mind. A four-kilogram cat receiving the same product is receiving a very different exposure per kilogram of body weight. That alone makes this section worth reading.

Proof’s Tested Clean page covers what each product is screened for beyond cannabinoid content.

The five things that should worry you

  1. No certificate anywhere on the site. The answer to this question is not “email us and we will send one.”

  2. A certificate with no date, or no lot or reference number. It cannot be tied to anything you can buy.

  3. Potency only, no contaminant panels. Half a test.

  4. A laboratory that turns out to be the brand, or a related company.

  5. A single certificate covering every product. Different products are different products.

A sixth, subtler one: a brand that publishes certificates but makes them very hard to find, or publishes them as low-resolution images you cannot read. That is technically compliance and practically not.

What a certificate does not tell you

Worth being clear, because certificates get treated as a complete answer.

It does not tell you the product works. It confirms contents, not effects.

It does not tell you the amount is right for your animal. That is a dosing question and there is no established veterinary standard for it.

→ Read next Dosing by animal size

It does not tell you the product is appropriate for the species. A clean certificate on a human product does not make it suitable for a dog, and it says nothing about xylitol or flavourings

It does not carry over between production runs. A good result last quarter is not evidence about this bottle.

The two-minute check

  1. Date is recent. Laboratory is not the brand.

  2. CBD figure matches the label claim.

  3. THC is not detected.

  4. Heavy metals, pesticides, solvents and microbials all present and passing.

If all four hold, you have a product that is what it says it is. A certificate answers exactly that, and reviewing one takes two minutes.

→ Read next The full pet CBD buying checklist

The short version

The short version

  • Check lot number, date and laboratory before you read any number.

  • Compare the CBD figure to the label claim.

  • For a pet product, THC should read as not detected. Not “low.”

  • Potency without contaminant panels is half a certificate.

  • Contaminant limits are set with adults in mind, which is why they matter more per kilo of animal.

  • A certificate proves contents. It does not prove effect, dose or species suitability.

This article is for general information and is not veterinary advice. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.