How to Read a Pet Supplement COA
Hemp Well Pet Wellness Guide
A certificate of analysis, often called a COA, helps pet parents verify that a supplement was tested and that the report matches the product and lot in their hand.
What is a COA?
A COA is a lab report connected to a specific product batch or lot. For pet supplements, it may show identity, potency, cannabinoid profile when applicable, heavy metals, pesticides, microbes, solvents, or other quality markers depending on the product and testing program.
The most important point is that a COA should not be a generic document. It should connect to the product you purchased. That connection usually happens through a lot number, batch number, product name, and test date.
Step 1: Match the product and lot number
Before reading numbers, make sure the report belongs to your product. Find the lot number on your bottle, jar, pouch, or package. Then look for the same lot or batch number on the analysis page or PDF. If the lot number does not match, you may be looking at a different production run.
Also check the product name and format. A dog soft chew, cat chew, oil, spray, balm, or bird supplement may each have different specifications. The COA should match the specific item you bought.
Step 2: Check the lab and test date
Look for the laboratory name, the date received, the date tested, and the date reported. Recent testing is not the only sign of quality, but missing dates or unclear lab identity should raise questions. A transparent company should make it easy to understand who tested the product and when.
Step 3: Understand potency and ingredient testing
For cannabinoid products, potency testing may list CBD, THC, and other cannabinoids. For hemp seed oil or hemp seed-based products, the report may focus on identity, safety, nutrition, or contaminants rather than CBD potency. Read the report in the context of the product type.
Do not compare a hemp seed oil COA to a hemp extract COA as if they are the same product. Hemp seed oil is valued for omega nutrition. Hemp extract products may include cannabinoids. The label and COA should make that difference clear.
Step 4: Look for safety and purity screens
Depending on the product, COAs may include testing for heavy metals, pesticides, residual solvents, microbial contaminants, mycotoxins, or other quality markers. Terms such as “ND” or “not detected” usually mean the lab did not detect that compound above its reporting limit. “LOQ” refers to the limit of quantitation, or the level at which the lab can reliably measure an amount.
Step 5: Know when to ask questions
Ask the company for help if you cannot find the lot number, if the COA does not match the product, if a result is unclear, or if your pet has special health considerations. COAs are useful, but they are only one part of choosing a responsible pet supplement.
Start with one simple next step
Hemp Well products include product-analysis access by lot number. Start with a product page such as Hip & Joint Dog Soft Chews, then compare the lot number on your package to the available analysis information.
Shop Hip & Joint Dog Soft Chews
Explore the All Hemp Well Products
Frequently Asked Questions
What does COA mean for pet supplements?
COA stands for certificate of analysis. It is a lab report connected to a specific product batch or lot.
Where do I find the lot number on a pet supplement?
The lot number is usually printed on the bottle, jar, pouch, bottom of the container, or back panel of the package.
What should I check first on a COA?
First, confirm that the product name, format, and lot number on the report match the product in your hand.
Does every COA show CBD?
No. Hemp seed oil products may not contain CBD. COA details depend on the product type and the testing being performed.
Hemp Well caution
Safe use in pregnant animals or animals intended for breeding has not been proven. If your animal’s condition worsens or does not improve, stop product administration and consult your veterinarian. An examination from a veterinarian is recommended before using Hemp Well, especially for pets with medical conditions or pets taking medication.
Article review
How this Hemp Well article is reviewed.
Author bio: Hemp Well’s editorial team writes pet wellness articles using Hemp Well product knowledge, label directions, customer questions, and responsible hemp education.
Reviewer bio: Reviewed for product accuracy, claim discipline, label consistency, and Hemp Well quality standards.
Veterinary note: This article is educational and is not a substitute for diagnosis, treatment, or advice from your veterinarian. Veterinary credentials are listed only when a specific veterinary reviewer is named.
Editorial policy, veterinary note & source citations
Editorial policy: Hemp Well content is written to help pet parents understand pet hemp products, serving-size considerations, product formats, quality standards, and safer shopping decisions. We avoid disease-treatment claims and update articles when product labels, regulations, or available guidance changes.
Veterinary note: Hemp Well educational content is not veterinary medical advice. If your pet has a medical condition, takes medication, is pregnant, intended for breeding, or symptoms worsen, consult your veterinarian before starting or continuing any supplement.
Sources and references:
