Lab records by peptide
NAD+ vendors
Vendors that sell NAD+, ranked by what independent labs found in their vials: 71 tests across 21 shops since February 2026. 1 shop graded A or B for NAD+; 9 shops graded D or E.
- 24%of NAD+ tests passed; median purity 98.55%
- 40%of vials held more than 5% less NAD+ than the label
- Most common failurepurity under 99.5% (38 tests). In 8 vials the lab could not confirm it was NAD+ at all.
- Last 90 days22 tests from 14 shops, 18 failed. Newest result Oct 12, 2026.
NAD+ vendors ranked by lab record
The grade is for NAD+ only, not the shop's whole catalog. A shop can pass on one peptide and fail on another. Shops with the same grade are ordered by number of tests.
| Vendor | Grade | Tests | Passed | Median purity | Under-filled | Last test |
|---|---|---|---|---|---|---|
| Shanghai Leader Peptide Biotechnology | A | 3 | 2/2 | 99.90% | 1/2 | May 11, 2026 |
| Zen PeptidesLast failure Mar 1, 2026: amount in the vial more than 35% off the label | D | 3 | 2/3 | 99.78% | 0/2 | Mar 18, 2026 |
| Dankang BioHealthLast failure May 6, 2026: purity under 99.5% | E | 6 | 2/6 | 98.75% | 1/6 | May 6, 2026 |
| LipeptidesLast failure Oct 12, 2026: purity under 99.5% | E | 5 | 1/5 | 98.20% | 1/4 | Oct 12, 2026 |
| LiliPeptideLast failure May 28, 2026: purity under 99.5% | E | 4 | 1/4 | 97.95% | 1/4 | May 28, 2026 |
| Reta-PeptideLast failure Aug 3, 2026: purity under 99.5% | E | 4 | 2/4 | 99.85% | 1/3 | Aug 3, 2026 |
| Shanghai ERP peptide BiotechnologyLast failure Sep 25, 2026: purity under 99.5% | E | 4 | 2/4 | 99.15% | 1/4 | Sep 25, 2026 |
| YimeiNo working storefront foundLast failure Sep 25, 2026: purity under 99.5% | E | 4 | 2/4 | 99.50% | 2/4 | Sep 25, 2026 |
| Mai PeptideLast failure Jun 24, 2026: purity under 99.5% | E | 3 | 1/3 | 99.10% | 1/3 | Jul 1, 2026 |
| NexaphLast failure May 27, 2026: purity under 99.5% | E | 3 | 1/3 | 98.30% | 0/2 | Jun 1, 2026 |
| LumiraLast failure Jul 22, 2026: the lab could not confirm it was the labelled peptide | – | 5 | 0/5 | 98.40% | 1/1 | Jul 22, 2026 |
| ZLZ PeptideLast failure Oct 6, 2026: amount in the vial more than 35% off the label | – | 5 | 0/5 | 98.50% | 3/4 | Oct 6, 2026 |
| Kerui Peptide HongKongLast failure Sep 17, 2026: purity under 99.5%; amount in the vial more than 35% off the label | – | 4 | 0/4 | 95.75% | 1/3 | Sep 17, 2026 |
| Shanxi Qianyecao Biotech QYCLast failure Aug 4, 2026: purity under 99.5% | – | 4 | 0/4 | 95.50% | 1/4 | Aug 4, 2026 |
| LP PeptideLast failure Oct 1, 2026: purity under 99.5% | – | 3 | 0/3 | 94.30% | 1/1 | Oct 1, 2026 |
| ZePeptideLast failure Sep 24, 2026: the lab could not confirm it was the labelled peptide | – | 3 | 0/3 | 96.80% | – | Sep 24, 2026 |
| Above All Peptides | – | 2 | – | 98.20% | 1/2 | Sep 17, 2026 |
| Heman Peptide HMLast failure Sep 10, 2026: purity under 99.5%; amount in the vial more than 35% off the label | – | 2 | 0/2 | 98.25% | 1/2 | Sep 10, 2026 |
| Tianjin Ruiwang New Material Technology CoWebsite domain does not resolveLast failure Sep 4, 2026: purity under 99.5% | – | 2 | 0/2 | 98.20% | 2/2 | Sep 4, 2026 |
| Blessed Peptides | – | 1 | – | 99.80% | 1/1 | Apr 20, 2026 |
| True Signature | – | 1 | – | 98.00% | 1/1 | Aug 12, 2026 |
Recent failed NAD+ tests
The newest results that failed, with the reason and the lab's certificate. Check whether your batch number matches before you trust a shop's own paperwork.
- LipeptidesOct 12, 2026 · Krause Analyticalpurity under 99.5% · purity 98.10% · fill +10.0% · Certificate
- ZLZ PeptideOct 6, 2026 · BTLabsamount in the vial more than 35% off the label · purity 99.90% · fill +213.0% · Certificate
- LP PeptideOct 1, 2026 · Krause Analyticalpurity under 99.5% · purity 94.30% · fill -21.0% · Certificate
- YimeiSep 25, 2026 · Krause Analyticalpurity under 99.5% · purity 98.70% · fill -6.0% · Certificate
- Shanghai ERP peptide BiotechnologySep 25, 2026 · Krause Analyticalpurity under 99.5% · purity 98.40% · fill -19.0% · Certificate
- ZePeptideSep 24, 2026 · Krause Analyticalthe lab could not confirm it was the labelled peptide · Certificate
NAD+ vendors that closed or went offline
Each status is quoted from its source. A shop with no working website may still sell through messaging apps, which is a reason for more caution, not less.
- YimeiNo working storefront found (Finnrick) · last NAD+ test Sep 25, 2026
- Tianjin Ruiwang New Material Technology CoWebsite domain does not resolve (Our site check) · last NAD+ test Sep 4, 2026
The full list is on closed peptide vendors.
Before you order NAD+
- Look at the shop's grade for NAD+, not its average. Dankang BioHealth has the most NAD+ tests (6); a shop with one or two tests has not shown it is consistent.
- 100% of these vials were bought and sent in by customers; the rest were sent by Finnrick or by the shop itself. Results from vials a shop chose to send are the weakest evidence.
- 2 labs tested them, mostly Krause Analytical and BTLabs. Ask for the certificate for your batch and check it on the lab's own site.
- Run the vendor checklist before paying, and read how the grades work.
Research peptides are sold for laboratory use only. This page reports lab results; it is not medical advice.