At Longevity Pen, we believe quality should be visible, understandable and verifiable.
That is why every important product conversation should go beyond the label. A name, concentration or visual appearance alone does not tell the full quality story.
A Certificate of Analysis, often called a COA, helps provide that context.
It shows batch-specific test results and confirms whether a product meets defined quality specifications.
Below, we explain what our latest NAD+ COA shows, how to read the key parameters, and why these values matter for transparency, quality and informed decision-making.
What is a Certificate of Analysis?
A Certificate of Analysis is a batch-specific quality document.
It records which tests were performed, what the required specification was, what result was measured and whether the batch was marked as compliant.
In simple terms, a COA helps answer questions such as:
Was this batch tested?
Which quality parameters were checked?
Did the measured values fall within the defined specification?
Is the batch marked as compliant?
For Longevity Pen, this matters because responsible longevity products should be supported by clear quality documentation.
Product and batch information
The COA shown on this page refers to a specific NAD+ cartridge batch.
Product: NAD 20% solution, 2.5 ml
Strength: NAD 500 mg in 2.5 ml solution
Cartridge: 3.5 ml cartridge
Batch number: 01/26 – NAD14L01/26
Production date: 13/01/2026
Expiration date: January 2027
COA date: 28/01/2026
Result: Compliant
Because COAs are batch-specific, the values on this document apply to this listed batch. Future batches should always be reviewed through their own batch-specific COA.
Key results from the new NAD+ COA
Purity — 96%
The COA lists titration analysis / purity with a specification range of 90–110%.
The result shown is 96, marked as compliant.
This means the measured purity result falls within the defined specification for this batch.
pH — 5.03
The pH specification is listed as:
5 ≤ pH ≤ 6
The measured result is 5.03, marked as compliant.
pH is an important formulation parameter because it helps indicate whether the solution falls within the intended range for the product.
Endotoxin concentration — <3.6309 EU/ml
The COA lists the endotoxin concentration specification as:
<70 EU/ml
The measured result is:
<3.6309 EU/ml
This result is marked as compliant.
Endotoxin testing is an important quality check for sterile products and helps provide additional transparency around batch quality.
Sterility — sterile
The sterility specification states:
Sterile by sterility test
The result is listed as:
sterile
This parameter is marked as compliant.
Sterility is one of the most important quality parameters in sterile formulation contexts, because safety starts before use begins.
Appearance — yellow
The appearance specification is listed as:
White to yellowish solution
The result is:
yellow
This is marked as compliant.
The yellow appearance is consistent with the expected visual specification for this batch.
Color ΔE — 0.18
The color specification is listed as:
0.0 < ΔE < 10.00
The measured result is:
0.18
This result is marked as compliant.
Color testing helps document visual consistency and confirms that the measured color value falls within the defined specification.
Density — 1.104
The density specification is listed as:
0.98 < x < 1.198
The measured result is:
1.104
This result is marked as compliant.
Density is another formulation parameter that helps verify consistency of the solution.
Why “compliant” matters — and why context matters too
A COA is not only about seeing the word compliant.
The real value comes from understanding what was tested, what the accepted specification was, and how the measured result compares to that specification.
For example:
The pH result should be compared to the pH range.
The purity result should be compared to the required purity specification.
The endotoxin result should be compared to the stated endotoxin limit.
The sterility result should be reviewed as part of the overall quality profile.
This is why we always encourage people to read beyond the word “PASS” or “compliant”.
Transparency becomes meaningful when the data is understandable.
Why Longevity Pen shares COA information
At Longevity Pen, we believe informed users make better decisions.
Sharing COA information supports transparency and helps people better understand what quality documentation can show.
It also reflects our wider philosophy:
Science.
Quality.
Safety.
Awareness.
A COA does not replace professional advice, and it should not be used as a medical claim. But it can help provide clarity around batch-specific quality testing.
That clarity matters.
The Longevity Pen standard
Quality is not just a final claim.
It is built through sourcing, production, formulation, testing and documentation.
This COA shows that the listed NAD+ batch was tested across multiple quality parameters, including purity, pH, density, appearance, color, endotoxin concentration and sterility.
All listed parameters are marked as compliant.
For us, that is what transparency should look like: clear data, visible documentation and better-informed choices.
Want to learn more about how to read a COA?
Explore our full guide to understanding Certificate of Analysis documents and what they can tell you about quality, purity and formulation integrity.
Disclaimer
This article is for educational purposes only and does not replace medical advice. Always consult a qualified healthcare professional before starting any new treatment, supplement or wellness protocol.
