Blank Peptides edges Peptide Confidential on our transparency method (7.8 vs 7.6). These are the two most lot-focused vendors on our list: both print a lot code on the vial and let you open that lot's record. Blank adds an endotoxin report for each current lot, sells GLP-class compounds under their real names and ships from Texas. Peptide Confidential is the only vendor we rate that publishes the lots it rejected or withdrew, names its founder and a phone number, and is cheaper, but it ships to the US from Canada. Neither has independent test data. Blank Peptides is #4 and Peptide Confidential #7 in our editors' order, which isn't sorted by score.
Notice: Research peptides are sold for in-vitro laboratory research only. They are not FDA-approved, not for human or animal consumption, and this page is not medical advice. This comparison covers supplier transparency only, based on public documentation. We didn't purchase or test products.
Side-by-side
| Peptide Confidential | Blank Peptides | |
|---|---|---|
| Transparency score (method) | 7.6 | 7.8 |
| Overall score | 7.6 | 7.8 |
| Based in | Calgary, Canada; founder and phone published; no entity | Sheridan, WY mailing address; ships from Texas; no entity |
| Domain registered | July 10, 2026 | March 4, 2026 (site claims 2021) |
| Lot records | 32, incl. 5 rejected and 2 withdrawn | 232 certificates |
| Endotoxin reports | None found | Yes, per current lot |
| Labs | Peptide Test Canada, Testides | Horizon Analytical, Freedom Diagnostics |
| Lookup | Code on the vial | Lot number and QR on the vial, verify page |
| Finnrick | No profile | No profile |
| GLP-class naming | Retatrutide as "GLP3 RT" | Real names |
| Catalog access | Open | Free member sign-up required |
| Free shipping | Orders of CA$200+ | US orders over $200 |
| Returns | No change of mind; damaged, lost or lab mismatch replaced | Unopened within 14 days |
| Coupon code | None (automatic multi-vial discount) | CHECKED, 10% off |
Lot records: two strong approaches
Blank Peptides has the bigger library: 232 certificates, with a purity certificate and a separate endotoxin report for each current lot. Its BPC-157 certificate (lot DPS-4605515) is a Horizon Analytical UPLC-MS report with a report number you can search at the lab. It claims sterility testing too, but we found no sterility report (review).
Peptide Confidential has fewer records (32) but a stricter rule: every lot it has had tested stays on its lab reports page, including 5 it rejected and 2 it withdrew after sale, each with the reason. Its records copy only the purity figure, so open the linked document for identity and content, and two current records were corrected to "lot not confirmed" in October 2026 (review).
If endotoxin data matters for your work, Blank is ahead. If you want to see a vendor's failures as well as its passes, Peptide Confidential is the only one that shows them. See endotoxin testing explained.
Business transparency
Neither names a legal entity. Peptide Confidential names its founder, Troy White, and publishes a Calgary phone number, WhatsApp and email. Blank Peptides gives a Sheridan, WY mailing address and says it has been in business since 2021, although its domain dates from March 2026. Both are 2026 businesses by domain.
Labeling
Both run strict research-use terms with no dosing content. Blank sells retatrutide, tirzepatide and semaglutide under their real names; Peptide Confidential sells retatrutide as "GLP3 RT" (its page shows retatrutide's CAS number). Blank's weak spot is a "Sexual Health" shop category.
Price check
| Item | Peptide Confidential (Oct 13, 2026) | Blank Peptides (Oct 12, 2026) |
|---|---|---|
| NAD+ 500 mg | CA$69 (about $48.35) | $65.00 |
| Retatrutide 30 mg | CA$126 as GLP3 RT (about $88.29) | $239.00 |
| Retatrutide 10 mg | CA$69 as GLP3 RT, presale (about $48.35) | $115.00 |
Peptide Confidential is cheaper before any discount. Blank's CHECKED code (10% off) and bulk pricing narrow the gap, and Blank charges in US dollars.
Shipping to US addresses
Blank processes orders within 1 business day and ships from Texas, free over $200, with no customs step (policy). Peptide Confidential ships from Calgary by Canada Post international service; US parcels clear customs, there's no quoted delivery window, and a parcel customs seizes isn't refunded or reshipped. See peptide shipping and customs.
Independent testing
Neither has independent data. Finnrick had no profile for either vendor as of our October 12-13, 2026 checks. Paper audits aren't the same as testing vials: a directory scored Blank's certificates 76/100, and no comparable audit exists for Peptide Confidential yet. Until community results exist, both vendors' records are their own evidence. See what is Finnrick?
Which should you choose?
- Choose Blank Peptides if you want an endotoxin report for your lot, real compound names, domestic shipping and a 10% code. Use CHECKED. Visit Blank Peptides.
- Choose Peptide Confidential if you want a public record that includes failed lots, a named founder you can phone, and lower prices, and you accept a cross-border order. Visit Peptide Confidential.