Buying
Mighty K9 Batch Verify: Check Your Bottle and Match Your Order
Lot MK-26/GE-3248 and CoA reference MK-3248-26-GE are seller reference codes, not lab proof. To check a bottle, look at the seal, smell and color of the oil, and the label details when it arrives. To match an order, call the order desk at +1 (302) 200-3480 with your order ID.
Written by the Mighty K9 editorial teamUpdated
The codes
What do the Mighty K9 lot and CoA codes mean?
They are reference numbers the seller uses. They are not a lab result, and no lab report has been published that matches them.
| Lot | MK-26/GE-3248 |
|---|---|
| CoA reference | MK-3248-26-GE |
| Who issued them | The seller, as reference codes |
| Published lab report | Not published |
| Lab name and test date | Not published |
| How to use them | Quote them when you call the order desk |
"CoA" stands for certificate of analysis. A real one is a lab document with results. A CoA reference number only points to a document; it does not show you what the document says.
So treat both codes as a way to ask a better question. The Mighty K9 testing and quality page explains what proof exists and what does not.
On arrival
How do you check a Mighty K9 bottle when it arrives?
Check it before the first serving. It takes two minutes and gives you a record if anything is wrong.
The bottle should be a 2 fl oz (60 mL) amber glass dropper bottle. The front should read Mighty K9, Canine Supplements, with "Organic Extra Virgin Olive Oil," "Contains 100% ESS60" and "Bacon Flavor."
C60 oils are often darker than plain olive oil, so a deep color is not by itself a problem. A sharp, rancid or paint-like smell is.
Take a clear photo of the box, the bottle front, the label panel and any printed codes. Keep the packing slip and the order email.

Checklist
Mighty K9 bottle checklist: what to look for
Go down the list with the bottle in hand. Anything in the right-hand column is a reason to call before using the oil.
| Check | What you should see | Call the order desk if |
|---|---|---|
| Outer box | Dry, no oil stains | The box is soaked or the bottle is cracked |
| Cap and seal | Cap tight, any seal intact | The seal is broken or missing |
| Bottle | Amber glass, 2 fl oz (60 mL) | Clear plastic, a different size or no dropper |
| Fill level | Close to full | Clearly low or leaking |
| Smell | Olive oil with a bacon note | Sharp, sour, rancid or chemical |
| Color and clarity | Even, oil-colored liquid | Cloudy layers, mold or floating bits |
| Label panel | 2 mL serving, ESS60 1.6 mg, 16.2 kcal | Different numbers or no panel |
| Lot and dates | A lot code and best-before date, if printed | You need them and cannot find them |
| Maker name and address | Printed on the bottle or box | None appears anywhere |
The label images we have show no lot, best-before date, maker or storage directions. Federal rules expect a maker or distributor name and place on pet food labels (FDA, n.d. (labeling and claims)), so look at the physical bottle.
Light and heat
Does light exposure damage C60 oil in shipping?
It can matter. In a mouse study, C60 in olive oil turned toxic after 4 to 8 days of light exposure, while fresh oil kept dark did not (Grohn et al., 2021).
A sealed amber bottle inside a box gets little light in transit. The bigger risk comes after delivery: a package left on a sunny porch, or a bottle kept on a bright windowsill.
- Bring the package inside the same day it is delivered.
- Store the bottle in a closed cupboard, away from the stove.
- Keep extra bottles in their box until you open them.
- Do not move the oil into a clear container.
Do not give oil that smells rancid or looks wrong. If your dog already had some and vomits, has diarrhea or stops eating, call your veterinarian.
By phone
How do you match your Mighty K9 order by phone?
Gather details
Order ID from the confirmation email, full name, email and the photos you took.
Call the order desk
Phone +1 (302) 200-3480. The desk can see orders; the website email cannot.
Quote the codes
Give the lot code on your bottle, or MK-26/GE-3248 and MK-3248-26-GE, and ask them to confirm the match.

Try Mighty K9 for 30 days2 mL a day · $64.99 a bottle · free shipping over $100 · empty bottles OK for refunds
Order nowQuestions
What should you ask when you call about your batch?
Ask whether a lab document exists for your lot, and ask for it by email. Then ask the questions the label leaves open.
- Does this order match lot MK-26/GE-3248? If not, what lot did I get?
- Can you email the certificate of analysis for reference MK-3248-26-GE, with the lab name and test date?
- What is the best-before date for my bottles?
- Who manufactures Mighty K9, and where?
- How should the bottles be stored?
Note the date, time and the name of the person you spoke with. If the answers do not satisfy you, the 30-day guarantee still applies. See the Mighty K9 refund policy for how returns work.
Problems
What if your Mighty K9 bottle is damaged or wrong?
Call +1 (302) 200-3480 with your order ID and photos before you use the bottle. A broken, leaking or mismatched bottle is an order problem, and the order desk handles it.
For a return, you can also email [email protected] for a return (RMA) number. The sales page says the 30-day money-back guarantee accepts empty bottles. Buyer pays return shipping. Use a tracked service.
Refund timing on the sales page: 3-5 business days after the returned bottles are credited, then 5-10 days for your card issuer to post it. Delivery questions belong on the Mighty K9 shipping page.
Records
What records should you keep for each Mighty K9 bottle?
Keep a short note for every bottle you open. It helps if you need a refund, and it helps your vet if your dog has a reaction.
Order details
Order ID, order date, pack size and the confirmation email.
Bottle details
Lot code, best-before date and the date you opened it.
Your dog
Start date, serving given, and any change in stool, appetite or energy.
Write down the delivery date too, and ask the order desk exactly when your 30-day guarantee window closes.
FAQ
Mighty K9 batch and bottle questions
Is the Mighty K9 CoA a lab report?
No. CoA reference MK-3248-26-GE is a seller reference number. No certificate of analysis with lab results has been published for it. Call the order desk at +1 (302) 200-3480 and ask them to email the actual lab document, with the lab name and test date.
Where on a Mighty K9 bottle is the lot number printed?
The label images we have do not show one, so check the physical bottle, the cap area and the box. If you cannot find a lot code or best-before date, call the order desk and ask which lot your order came from.
How do I know my Mighty K9 is genuine?
Buy through the official order page, keep the confirmation email, and compare the bottle with the label: 2 fl oz amber glass, 2 mL serving, ESS60 1.6 mg, 16.2 kcal. Then call the order desk with your order ID to confirm the match.
What should Mighty K9 smell like?
Like olive oil with a bacon note. A sharp, sour, rancid or chemical smell is a reason to stop and call the order desk before giving any more. Keep the bottle capped and in a dark cupboard to protect it.
Can I return a Mighty K9 bottle that arrived damaged?
Yes, call +1 (302) 200-3480 with your order ID and photos right away. For returns, email [email protected] for an RMA number. The guarantee covers 30 days and accepts empty bottles, but return shipping is not refunded.
Does the website email handle batch questions?
No. The website inbox cannot see orders. Batch, lot, damage and refund questions go to the order desk by phone. Use the website email only for page corrections, privacy or press.
Who wrote this
Written and reviewed by
Plain-language pages built from the bottle label, the sales page and linked veterinary and government sources.
Last updated . Read our editorial standards and how we check reviews. This website is run by a U.S. retail partner, not by the manufacturer. This site is paid a commission when you buy through our order links.
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