Blank Peptides has some of the most complete lot-level documentation of any vendor we rate: a purity certificate and a separate endotoxin report for each current lot, from labs it names, with the lot number printed on every vial. Its business details are much thinner, and there's no independent test data yet. Its overall score is 7.8/10; on our transparency method alone it scores 7.8/10. It sits at #4 in our editors' order, which weighs partnership terms as well as the rating.
Notice: Blank Peptides' products are sold for in-vitro laboratory research only. They are not FDA-approved and not for human or animal consumption. This review covers supplier transparency only. We didn't buy or test any products.
Blank Peptides at a glance
- Operating status: Live storefront at blankpeptides.com, checked October 12, 2026. The catalog, prices and COAs sit behind a free member sign-up (an email, a 21+ and research-use attestation, and a 6-digit code sent by email).
- Location: The contact page gives a mailing address in Sheridan, WY. Product pages say orders ship from Texas. The site names no legal entity.
- Business age: Its brand-facts page says it has been "in business since 2021," and the about page says "03+ years in research." The domain was registered on March 4, 2026 (RDAP record). The brand-facts page also says it contract-manufactures for other peptide brands it doesn't name, which could explain older activity, but we couldn't verify it.
- Manufacturing claim: It calls itself a manufacturer with its own cGMP laboratory. We found no facility address or registration to confirm that.
- Catalog: 34 compounds plus bacteriostatic water, including disclosed-ingredient blends (GLOW 70mg, KLOW 80mg, Wolverine 20mg) and GLP-class compounds sold under their real names.
- FDA record: No warning letter found in the FDA database.
Blank Peptides COA: what's published
This is the vendor's strongest area.
- A per-lot library. The COA page listed 232 certificates on October 12, 2026, newest first. Each current lot has a purity certificate and a bacterial endotoxin report side by side. Older "wholesale" certificates from 2025 are also listed.
- Lot on the vial. Every vial label carries a lot number and a QR code, and the verify page returns the certificates for a lot you type in.
- A lab-side check. Product pages show the lab's report number with a note to search it at horizonanalytical.com, so you can check a report outside the vendor's site.
We opened the current BPC-157 certificate (lot DPS-4605515). It's a Horizon Analytical report dated August 22, 2026, using UPLC with mass spectrometry. It shows 99.4% purity against a >98% specification and 9.82 mg measured in a 10 mg vial. The matching endotoxin report shows <0.05 EU/mL, marked "Pass." Neither report lists an accreditation, and the endotoxin report doesn't name its test method. See how to read a peptide COA and endotoxin testing explained.
Three things didn't line up:
- Sterility. The brand-facts page says every lot gets identity, purity, endotoxin and sterility testing. We found purity and endotoxin reports, but no sterility report.
- Shared lot numbers. The store lists CJC-1295 without DAC and CJC-1295 with DAC under the same lot (665394) and purity figure, and an independent directory found a with-DAC product page linking a "No DAC" certificate (PeptideTech).
- A data-sheet slip. The BPC-157 listing's chemical-name field read "Beclomethasone pentadecapeptide" when we checked; beclomethasone is an unrelated steroid. The data sheet on the same page names it correctly.
Independent testing
We found no Finnrick profile for Blank Peptides on October 12, 2026 (Finnrick). Two directories have audited its paperwork, which isn't the same as testing vials: PeptIQ scored its 179 audited COAs 76/100 ("Solid") and flagged 6 as high-concern, and PeptideTech read 33 certificates without authenticating any batch. Until independent results exist, the certificates are the vendor's own evidence. See Janoshik vs Finnrick for why that matters.
Labeling: the strictest on our list
The site frames everything as in-vitro research. Its brand-facts page says it gives no "dosing, reconstitution-for-use, or protocol guidance for any living subject." Compounds are sold under their real names, including retatrutide, tirzepatide and semaglutide, rather than codes. Product FAQs describe preclinical literature and say none of it covers use in people. Its blog covers lab-side topics such as lot numbering, heavy-metals testing and spotting fake peptides. Two shop categories, "Sexual Health" and "Skin, Hair & Aesthetic Research," lean toward consumer framing, which is the main reason this factor isn't higher.
Pricing and coupon code
Prices checked October 12, 2026, after signing in:
| Product | Size | Price |
|---|---|---|
| BPC-157 | 10 mg | $65.00 |
| Retatrutide | 10 mg / 30 mg | $115.00 / $239.00 |
| Tirzepatide | 10 mg / 30 mg | $95.00 / $219.00 |
| Semaglutide | 10 mg | $99.00 |
| GHK-Cu | 100 mg | $75.00 |
| NAD+ | 500 mg / 1,000 mg | $65.00 / $105.00 |
| Bacteriostatic water | 10 mL | $25.00 |
Bulk pricing cuts the per-vial price: BPC-157 drops to $58.50 each at 3+ and $48.75 each at 9+. Our code CHECKED gives 10% off the entire order (details). The site was also showing a FALL30 site-wide banner and 25% off a first order for new members when we checked. It doesn't publish stacking rules, so check the discount line at checkout.
Shipping, payment and returns
- Shipping: Orders are processed within 1 business day and ship from Texas. US shipping is free over $200, standard delivery is 2-3 business days and overnight is available. International shipping is offered, with duties on the buyer (policy).
- Payment: Major cards, wire transfer and cryptocurrency, per its FAQ.
- Returns: Unopened, sealed items within 14 days of delivery. It promises a refund or reshipment if independent HPLC or mass-spec testing shows a batch below 99%, regardless of seal.
Is Blank Peptides legit?
Blank Peptides appears to be an operating US vendor with unusually complete lot-level paperwork: 232 certificates, a purity and endotoxin report per current lot, and labs named on each one. But it's young (domain registered March 2026), names no legal entity, and has no independent test data.
Our scam check, as of October 12, 2026:
| Check | Result |
|---|---|
| Live storefront | Yes, blankpeptides.com (catalog behind a free sign-up) |
| Business entity/address published | Partly: a Sheridan, WY mailing address and Texas fulfillment; no legal entity (contact) |
| Domain age | Registered March 4, 2026 (RDAP); site claims 2021 |
| Named testing lab | Yes: Horizon Analytical and Freedom Diagnostics, on site and certificates |
| Lot-matched COAs | Yes: 232 on file, purity plus endotoxin per current lot, lot lookup |
| Independent tests (Finnrick) | No profile found |
| FDA warning letter | None found (FDA database) |
| Trustpilot | Profile removed by Trustpilot ("goes against our guidelines"), checked October 12, 2026 |
| Reddit discussion | Little discussion found (October 12, 2026) |
These checks cover disclosure and public records only. They don't test what's in the vial.
Compare it: Blank Peptides vs American Peptides · Blank Peptides vs NextGenPeps · Blank Peptides vs PSPeptides · Blank Peptides vs Peptide Plugs · Peptide Confidential vs Blank Peptides
Blank Peptides reviews and complaints
There's no Trustpilot score to read: Trustpilot shows the profile as removed for breaking its guidelines, as it has done with other research-peptide sellers such as Licensed Peptides. The reviews on Blank's own FAQ are unattributed "Verified Buyer" quotes, so we don't count them. We didn't find substantial Reddit threads. For a vendor this new, the lot paperwork is most of the track record.
How Blank Peptides scores
| Factor | Weight | Score (5-10) | Why |
|---|---|---|---|
| COA publication | 20% | 9.25 | Public per-lot library, dated, purity and endotoxin; lot lookup; a few mismatched entries |
| Lab traceability | 20% | 8.5 | Labs named on site and certificates; report numbers searchable at the lab; no accreditation listed |
| Independent testing | 20% | 5.0 | No Finnrick profile |
| Labeling and naming | 20% | 8.5 | Strict RUO, no dosing content, real compound names; "Sexual Health" category |
| Business transparency | 10% | 6.0 | Mailing address, payments and shipping disclosed; no entity; 2021 claim vs 2026 domain |
| Regulatory record | 10% | 10.0 | No FDA warning letter found |
| Transparency score | 100% | 7.8 | Weighted average; raw method score 5.7 of 10 |
Shown on our 5-10 display scale: 5 means a vendor just meets our minimum bar to be listed, 10 is a perfect score on every factor. How we score.
Alternatives
- Peptide Plugs (7.5/10): also uses Freedom Diagnostics, with accession codes you can check at the lab, and publishes its LLC and address. Compare them in Blank Peptides vs Peptide Plugs.
- NextGenPeps (8.8/10): names Janoshik and BioRegen on every COA entry and publishes a San Diego address.
- American Peptides (9.1/10): our #1 pick, with a 126-certificate lot lookup.
- Licensed Peptides (7.4/10): the other vendor on our list that publishes endotoxin reports.
Verdict
Blank Peptides scores 7.8/10. Per-lot purity and endotoxin reports from named labs, a lot number on every vial and strict research-use framing put its documentation near the top of our list. A business history that doesn't match its domain, no legal entity and no independent data hold it back. Finnrick results and a published entity would move its score most.
If you evaluate it for laboratory work, look up your exact lot and search the report number at the lab's own site. Visit Blank Peptides and use code CHECKED for 10% off.
Related on PeptideChecked
- Comparisons: Peptide Confidential vs Blank Peptides, Blank Peptides vs American Peptides, Blank Peptides vs NextGenPeps, Blank Peptides vs PSPeptides, Blank Peptides vs Peptide Plugs
- Compound pages: Best Retatrutide Vendors, Best BPC-157 Vendors, best peptide vendors in the USA, third-party tested peptides
- Blank Peptides coupon code, all peptide coupon codes and the vendor testing tracker
