Is GeneCust Legit? GeneCust Peptide Brand Review
Is GeneCust legit? GeneCust is a French custom molecular biology service, and on September 29, 2026 its old domain, genecust.com, carried only a moving notice. The notice sends visitors to genecust.org, which turned out to be a single page with a contact form. We record what both addresses show and leave the verdict to you.
The home board lists bought spots by bid size; this GeneCust review is not one of them and does not rank it.
What genecust.com publishes today (checked September 29, 2026)
The short answer: GeneCust is in the middle of a website move. The old site still shows a street address in Boynes, France, two phone numbers and an email at the new domain; the new site describes the services, including peptides analysed by mass spectrometry and HPLC, but shows no address, phone, company details, terms or policies, and its contact and forms links return to the home page. Here is what each address shows:
| Item | What we saw | Page |
|---|---|---|
| Research-use statement | None seen on either domain. Services are described as custom work for research and development projects. | genecust.org home |
| Certificates or testing page | No certificate library. genecust.org: “Each GeneCust peptide is analyzed by mass spectrometry and HPLC. Quality control data is provided with each peptide.” siRNA is described as “produced under ISO9000 standard”. | genecust.org home |
| Named testing lab | None; testing is described as in-house. | genecust.org home |
| Contact route | genecust.com notice: +33 238 39 97 48, +33 222 44 91 07, [email protected]. genecust.org: a contact form (name, email, message) only; its /contact and /forms addresses returned to the home page in both a plain request and a full browser. | genecust.com notice, genecust.org home |
| Shipping policy | Not published on either domain. | genecust.org home |
| Refund or returns policy | Not published on either domain. | genecust.org home |
| Company name or address | genecust.com notice: 21, rue de Chalmont, F-45300 Boynes, France; footer “© 2019 GeneCust”. No company form, registration number or VAT number on either domain. | genecust.com notice |
| Product range | Gene synthesis (“For almost 20 years”), custom peptides with about three weeks' production for most sequences, oligonucleotides, siRNA, custom polyclonal and monoclonal antibodies, and protein expression. The old site menu also lists virus services. | genecust.org home, genecust.com notice |
For a laboratory buyer, the practical meaning is that GeneCust's public paperwork is temporarily thin. The old notice carries the contact details and the new site carries the service description, and neither carries terms, prices or company registration. A French business would normally publish a legal notice with a SIREN number; neither domain showed one on September 29, 2026.
Reading the public signals
The moving notice is bilingual, prominent and consistent: both the English and French text point to genecust.org, and the email on the old page already uses the new domain. That makes it unlikely a buyer would be sent somewhere unexpected by following it.
The new site is sparse. It describes quality control for peptides and siRNA in a few sentences, promises low peptide prices without showing any, and offers only a form. The navigation links that should lead to contact and forms pages loop back to the home page.
The copyright year on the old site, 2019, and the claim of almost 20 years in gene work are the only time markers on either page.
Applying the checks to GeneCust
- Ask for the legal notice details. Request the company form, SIREN or VAT number and registered address, and check them in the French business register.
- Confirm the Boynes address and phones still apply. They appear only on the retiring domain.
- Ask for terms with the quote. Neither domain posts sales, shipping or return terms.
- Ask for the QC data format. The site says mass spectrometry and HPLC data come with each peptide; request an example before ordering.
For what peptide QC data should contain, see our peptide COA guide.
Where GeneCust stands today
GeneCust is reachable, through the phone numbers and email on its moving notice and the form on its new site, but its public documentation is incomplete while the move is under way. A buyer should expect to request the company details and terms directly.
FAQ
Is GeneCust legit?
We do not give that verdict. On September 29, 2026 genecust.com showed only a moving notice with an address in Boynes, France, two phone numbers and [email protected], and genecust.org was a one-page service description with a contact form and no address, terms or company registration details.
Does GeneCust publish third party testing?
GeneCust cites no external lab. The new site says each peptide is analysed by mass spectrometry and HPLC and that QC data ships with it. Ask for an example of that data before ordering.
Is GeneCust ranked on the BestPeptideBrand board?
No ranking follows from this page. The board holds paid listings sorted by bid, and GeneCust would appear there only if it placed one.
Sources
We requested each address below on September 29, 2026 with a desktop browser user agent (genecust.com also on its www and apex forms), and reopened the genecust.org links in a full browser the same day.
- genecust.com moving notice (genecust.com/en), checked September 29, 2026
- genecust.org home page (genecust.org), checked September 29, 2026
- genecust.org contact address (returned to the home page) (www.genecust.org/contact), checked September 29, 2026
- genecust.org forms address (returned to the home page) (www.genecust.org/forms), checked September 29, 2026
Independent transparency review built from the public pages listed under Sources, loaded on September 29, 2026. GeneCust has no relationship with this site unless it holds a listing on our board, which is paid placement ordered by bid amount only. This page asserts no wrongdoing and makes no purchase recommendation. Nothing here is medical advice. Corrections: see the site contact page.