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Supplement Certificate of Analysis: What a Real One Shows
A supplement certificate of analysis is a lab report for one production lot. It names the lab, the tests, the methods and the results. A code printed on a page or bottle is not that report. Melonex's CoA code is a seller reference, and no lab report is published.
Written by the Melonex numbers deskUpdated · 4 min read
01Definition
What is a supplement certificate of analysis?
A supplement certificate of analysis, or CoA, is a lab report that covers one lot of one product.
It lists what the lab tested, how it tested, and what it found. Common lines are identity, strength, heavy metals, microbes and date.
It is tied to a lot number. A report for last spring's lot says little about the bottle in your hand.
Federal rules for supplement makers cover lab work, batch records and quality control (21 CFR Part 111 (CGMP)). A CoA is one paper that can come out of that work. The rule itself does not require a maker to post it online.
02Report or code
How is a CoA different from a reference number?
A CoA holds results. A reference number is only a label that points to a file you may never see.
Think of it as a receipt versus a receipt number. The number tells you a receipt exists. It does not show what you paid.
| Test | Real CoA | Code only |
|---|---|---|
| Lab named | Yes, with address | No |
| Methods listed | Yes | No |
| Results with units | Yes | No |
| Lot matches bottle | Yes | Unknown |
| Signed and dated | Yes | No |
If a page gives you only the code column, you have a lead, not proof.
03This product
Does Melonex have a certificate of analysis?
We have no Melonex lab report to show you. The codes in the seller's materials are references, not results.
Two codes appear in the seller's materials: lot M-26/ME-3161 and CoA M-3161-26-ME. We treat both as seller references. No lab report is published with them, so we cannot tell you what a lab found.
Our lot number check shows where a lot code sits on the bottle and what you can and cannot learn from it.
The five badges in the seller's image set tell the same story. Each is a logo, and none is a lab result. Our quality and badges page gives a plain note on each one.
What you can check today is the printed label. It lists a 500 mg proprietary blend with no single amounts, as the label page shows. A lab report would add the missing numbers, which is why we point out the gap.
Matches the label's facility line. Registration lists a building with FDA; it is not approval of the product or the plant.
GMP is the federal rule every supplement maker must follow (21 CFR 111). The badge names no auditor.
The label agrees: made in the USA with globally sourced ingredients. The countries are not named.
A seller badge. No certifier is named and the label itself prints no non-GMO claim.
The seller lists a 60-day money-back guarantee with at least 30 days of use and a 20% restocking fee. Confirm the live policy.
The badges are taken from the seller's image set. A badge is a claim, not a certificate: none names a certifier, lab or audit. FDA does not approve supplements before they are sold (FDA, Is it really FDA approved?), and every supplement maker must follow the GMP rule anyway (21 CFR Part 111 (CGMP)).
04What to ask
What should you ask a seller for?
Ask for the full report for your lot number, not a summary and not a logo.
A short message is enough, and it leaves a written record. Send your lot number and ask for the lab's name and the signed report.
Copy your lot code
Take it from the bottle in your hands, not from a web page.
Request the report
Ask for the lab name, the tests and the results for that lot.
Check the match
The lot, product name and date on the report must match your bottle.
Note a refusal
A seller that cannot send one is telling you something.
05Limits
Does an FDA registered badge replace a CoA?
No. An FDA registered badge says a facility is listed with FDA, and it shows no test results.
FDA says registering an establishment does not denote approval of it (FDA, Is it really FDA approved?). The Melonex label says it was made in an FDA registered facility. That is a fact about a building, not a lot.
Ask your doctor or pharmacist before you add any supplement, and keep taking prescribed medicine as directed. A lab report would not change that advice.
Prices listed on the seller's order page; confirm at checkout. The 2-bottle kit costs $158, with $9.99 shipping. Ask your doctor about your medicines first. 60-day money-back guarantee per the seller.
Melonex is not a treatment; it is a dietary supplement. Ask your doctor or pharmacist first if you take blood-pressure medicine, nitrates for chest pain, an erectile-dysfunction drug such as sildenafil or tadalafil, a potassium-sparing diuretic (amiloride, spironolactone, triamterene), a blood thinner, or diabetes medicine, or if you have had a recent heart attack. Arginine and citrulline can add to these. Keep taking prescribed medicine. See side effects and interactions.
06FAQ
Melonex questions people ask
Can a supplement company post a fake certificate of analysis?
Yes, a PDF can be edited, so check that the lab, lot and date match your bottle. Call the lab named on the report and ask whether it issued that lot's report. A report with no lab named cannot be checked.
What does a CoA for a supplement usually list?
A CoA usually lists the lab, the lot, each test and method, and the result with units. It may also include identity, strength, heavy metals and microbes. The exact tests vary by product and lab.
Is a lot number on a bottle the same as a CoA?
No. A lot number only says which batch you hold. A CoA is the lab report for that batch. You need the lot number to ask for the CoA, but the number alone proves nothing.
07Who wrote this
Written and reviewed by
Pages built from the label, the seller's materials and linked NIH, FDA, CDC, AHA, FTC and peer-reviewed sources.
Last updated . Read how we write and how we check reviews. This website is run by Melonexheart, which describes itself as a U.S. authorized Melonex merchant. It is not the manufacturer or the label's distributor, and we cannot independently verify the 'authorized' status. We are paid when you buy through our order links.
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More about Melonex
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Show the bottle to your doctor or pharmacist first, then pick a pack. Six bottles cost the least per bottle, and the seller lists a 60-day money-back guarantee on every pack.
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- 60-day money-back
- Ships from the U.S.