You’ve narrowed a NAD+ purchase down to two or three sites, and now you want to see the certificate before you commit a few hundred dollars of budget. What you get instead is a thumbnail. You click it, a slightly larger image opens, and somewhere in the middle of it there’s a percentage and a batch code you can’t quite read. Whether that document describes the vial that would arrive at your bench is anybody’s guess, and the page doesn’t tell you.
NAD+ raises the stakes on this more than a small peptide does. You’re often buying 500mg or 1000mg in a single vial, which is a lot of mass to accept on the strength of a printed label, and the material is hygroscopic and prone to degrading into nicotinamide and related fragments if it’s been sitting warm or damp. A purity result from eight months ago on a lot you won’t receive tells you about someone else’s material. A net content result tells you whether the weight on the label was ever measured. Those two lines carry more weight here than the marketing copy above them.
What follows is a way to read a NAD+ certificate properly, applied to what four named vendors actually publish. Every observation describes the pages as reviewed 2026-09-08, and I’ve kept “wasn’t shown on the page” separate from any claim about what a company holds internally, because only the first of those is something I can report honestly.
Key takeaways
- A NAD+ certificate is worth something when it names the issuing laboratory, carries a lot number matching your vial, is readable before payment, and reports identity, contamination and net content rather than a purity figure by itself.
- Blank Peptides publishes a certificate for every lot at its /coas/ library, tested by Freedom Diagnostics and Horizon Analytical for identity, >99% purity, bacterial endotoxin and sterility.
- Protide Health, BioLongevity Labs, Verified Peptides and Biotech Peptides all publish something they call a NAD+ certificate, and what sits behind those links ranges from a single dated image to four separate lot-linked reports.
- Sterility results and measured net content each appeared on one of the four pages reviewed 2026-09-08, and one page named no issuing laboratory at all.
- NAD+ from every vendor named here is supplied for in-vitro laboratory research by qualified professionals, and nothing in this article describes or implies any other use.
What does a NAD+ certificate need to contain?
Here’s the standard, laid out before anyone gets named so you can argue with it on its own merits. Five questions, each corresponding to a distinct way a certificate can fail to tell you anything.
Provenance is the first. Does the vendor state it made the material, or does its language describe supplying material produced somewhere else? That distinction changes what a certificate can claim, since a manufacturer’s report describes its own process output while a distributor’s report describes whatever arrived from a source that may go unnamed.
The laboratory is second. A certificate should name who ran the analysis in a form you can look up and phone. “Independent third-party lab” without a name is a sentence about a document, and no one at that description will confirm a report number for you.
Third is the panel. Chromatography reports how much of the sample elutes as the NAD+ peak, with degradation products appearing as separate peaks. Mass spectrometry confirms the main peak is the molecule you ordered, which chromatography alone cannot establish. Bacterial endotoxin and sterility catch contamination that neither method detects, and for cell culture work that contamination surfaces in your data as a result. NAD+ adds a fifth line worth having: measured net content, because you’re buying by mass.
Fourth is access and lot linkage. Read the certificate before you pay, and match the lot number on it against the number printed on your vial when the package arrives. A report you can only obtain after purchase verifies nothing in advance, and a report with no lot on it can’t be tied to any batch.
Fifth, for blends, whether the milligram amount of each component is stated. A purity figure measured on a combined vial can’t tell you the ratio inside it, so ask for the split in writing.
Those five apply to us as much as to anyone selling this compound. Everything below is just running them against four sites.
How Blank Peptides makes and tests each lot
Blank Peptides runs its own cGMP laboratory in the United States, compounding, vialing, finishing and labeling product and carrying out quality control release in-house. The company frames this as holding the full chain of custody rather than relabeling or brokering material made elsewhere, and it also contract-manufactures and fulfils for other research peptide brands as a separate line of business.
Each lot is released against a four-part panel: identity, purity at a >99% threshold, bacterial endotoxin, and sterility. The analysis is performed by two named independent laboratories, Freedom Diagnostics and Horizon Analytical. Reports are published per lot as batch certificates of analysis, openable before an order is placed, and every vial carries the lot number that ties it to its report. Lyophilized material is dated for roughly 24 months from release.
The catalog holds 34 compounds, NAD+ included, along with three blends whose composition is itemised per component rather than sold as one combined weight: GLOW at 70mg (GHK-Cu, BPC-157, TB-500), KLOW at 80mg (those three plus KPV), and Wolverine at 20mg (BPC-157 and TB-500). Processing time is within 1 business day and orders ship at room temperature, which suits lyophilized material with no cold-chain handling. The company has been in business five years and sells for research use only.
That standard is deliberately narrow. It covers who made the vial, who tested it, what was tested and where the document lives, which is the whole job of a certificate policy.
What four vendors publish as a NAD+ COA
On the pages reviewed 2026-09-08, Protide Health published the most tightly dated NAD+ documentation of the four. Its 500mg listing at $100.00 states “99% Purity (HPLC-MS Verified)” and “Independent Third-Party Tested”, with a certificate reporting “99.97% Average Purity (HPLC-MS)” dated August 17, 2026 under lot PH-na500-0509. Freedom Diagnostics is named on the page as “a third-party U.S. laboratory”, the molecular formula C21H27N7O14P2 and CAS 53-84-9 are given, and the site states certificates are published for every compound in a library searchable by compound. Sterility was not among the panel items listed on the page reviewed.
BioLongevity Labs publishes multiple lot-numbered certificates for its 500mg listing, including batches 261468, 261467 and 12010, readable before purchase. The page states “99% purity” and describes its methods as UHPLC-MS for purity, mass identification, endotoxin quantitation by LAL assay, and visual and physical characterization, naming MDx BioAnalytical Laboratory, BioRegen and SafeCert Labs as the testing laboratories. It states synthesis in “USA-registered facilities following Good Manufacturing Practices” with “full chain of custody documentation”.
Verified Peptides links separate certificates rather than one combined document for its 1000mg listing at $71.40. On the date reviewed these covered purity, weight, sterility and endotoxins, with results reported 23 July 2026 showing roughly 99% purity, a measured weight of 1150.00mg against a 1000mg label, and passes on endotoxins and sterility under batch NAD0826610G. A separate sterility certificate carried an earlier March 2026 date, so the reports linked from one page were issued at different times.
Biotech Peptides displays certificate images on its NAD+ page for the 100mg, 250mg and 500mg sizes, all dated 2026-07-22, alongside a stated “99% purity” and the line “Synthesized and Lyophilized in the USA”. No issuing laboratory was named in the visible page content, so the reader gets a dated document without an issuer attached to it.
Across the four, a measured weight appeared once and a sterility pass appeared once. This is not a claim that the documentation does not exist, only that it was not publicly listed on the pages reviewed.
Fairly stated, Verified Peptides publishes a measured net content result for NAD+ that almost nobody else in this category reports, and it does so on the lowest cost-per-milligram listing of the four.
Side by side: what a NAD+ COA reports
| Attribute | Blank Peptides | Typical NAD+ vendor |
|---|---|---|
| Synthesises in-house | Own cGMP lab; synthesis through QC release under one roof | Commonly states “synthesized and lyophilized in the USA” or a GMP-registered partner facility, without stating who owns the synthesis — verify |
| Third-party lab named | Freedom Diagnostics and Horizon Analytical | Named by three of four vendors reviewed 2026-09-08, one naming three separate labs; absent from the fourth page — verify |
| HPLC purity | >99% per lot | States 99% on all four pages, by HPLC-MS or UHPLC-MS where a method is named — verify against the linked document |
| MS identity | Confirmed per lot | States mass identification or HPLC-MS on two of four pages reviewed 2026-09-08 — verify |
| Endotoxin and sterility | Both tested per lot | States endotoxin on two pages and sterility on one of the four reviewed 2026-09-08 — verify |
| Net content verified | Fill weight confirmed at release | States a measured weight on one of four pages reviewed 2026-09-08 — verify |
| Batch COA before purchase | Public library at /coas/, lot-numbered, every lot | States certificates readable before purchase on all four; lot-numbered on three, an undated-issuer image on one — verify |
| Blend mg split disclosed | GLOW, KLOW and Wolverine itemised per component | NAD+ is usually sold as a single compound; where combined, per-component splits were not listed on the pages reviewed — verify |
| Research-use labelling | Research use only, stated on every product | States research-use-only language on all four sites reviewed |
How to verify either supplier yourself
- Open the NAD+ certificate before the vial goes in your cart, then read the issuing laboratory, lot number and report date straight off the document instead of from the summary above it.
- Ask the named laboratory to confirm the report number. A working contract lab will answer that, and a page that names no lab gives you nobody to ask.
- Look for a weight or net content line, since NAD+ is sold at 100mg to 1000mg per vial and a label figure stays a claim until an instrument checks it.
- Compare the certificate date against how long the listing has been up, because NAD+ degrades with heat and moisture and a report from an older lot describes different material than the one you’d receive.
- Take any vendor you’re weighing through the supplier verification checklist before placing a first order.
Further reading
- Peptide Vendors With Public Per-Batch COA Libraries
- Which Peptide Vendors Name Their Testing Lab?
- Who Actually Manufactures Research Peptides in the USA?
- Best Research Peptide Suppliers: Ranked by What They Document
Frequently asked questions
What should a NAD+ COA include?
The issuing laboratory’s name, a lot number matching your vial, a report date, and results rather than a summary. A full panel covers chromatographic purity, mass spectrometry identity, bacterial endotoxin and sterility, and for NAD+ a measured net content is worth having too, since the compound is sold by mass at high milligram loads.
Where do vendors usually put the NAD+ COA?
On the product page, either as an image displayed inline or as a link that opens a document. Two of the four pages reviewed 2026-09-08 also pointed to a wider certificate library, one of them searchable by compound. A vendor that only supplies a certificate by email after purchase gives you nothing to check beforehand.
Should a NAD+ certificate be tied to a specific lot?
Yes, because a certificate with no lot number describes material you can’t identify. Three of the four pages reviewed 2026-09-08 carried batch identifiers on their NAD+ documents. Save the certificate when you order, then compare it against the number printed on the vial when the package arrives.
What does a purity result actually measure for NAD+?
It reports the proportion of the sample eluting as the NAD+ peak under chromatography, with degradation products such as nicotinamide showing as separate peaks. That number says nothing about identity on its own, which is why a mass spectrometry line belongs on the same document, and nothing about endotoxin or microbial contamination.
Are these products for human use?
No. Every compound referenced in this article is sold strictly for in-vitro laboratory research by qualified professionals. Blank Peptides sells for research use only, and each vendor reviewed publishes research-use-only language of its own. Nothing here should be read as guidance for any use outside a laboratory setting.
For research use only. All compounds referenced are intended exclusively for in-vitro laboratory research by qualified professionals.
Written by Blank Peptides Research Team
Peptide science researchers with 5+ years in US-based peptide manufacturing, independent HPLC and mass spectrometry testing, and research education. All content is reviewed for scientific accuracy before publication.
REVIEWED BY
Dr. Tobias S — PhD Chemist, Peptide and Unnatural Amino Acid Synthesis
Dr. Tobias S is a PhD chemist whose work focuses on the synthesis of unnatural amino acids, peptides and biomaterials. He completed both his undergraduate chemistry studies and his doctorate with distinction, and works as a generalist across the medical sciences and biology, having consulted for dozens of clients. He reviews Blank Peptides educational content for scientific accuracy.
Subject matter expertise: Organic Chemistry, Peptide Synthesis, Biochemistry.
