What research use only means
Research use only, usually shortened to RUO, is a labelling category for laboratory reagents. A product sold as RUO is intended for in-vitro and analytical work, is not manufactured or tested as a medicine, and carries no claim about treating, preventing or diagnosing anything. The label 'not for human consumption' is part of the same category.
The term comes from the regulation of diagnostic and laboratory products, where it distinguishes reagents that have not been through clinical validation. For peptides it marks the difference between a chemical sold for study and a registered medicine such as the semaglutide pens dispensed by pharmacies.
The Dutch Medicines Act decides what a medicine is
The Geneesmiddelenwet defines a medicine in two ways. A substance is a medicine by presentation when it is offered as having properties for treating or preventing disease in humans. It is a medicine by function when it is used in or administered to humans to restore, correct or modify physiological functions. Either route is enough.
This is why claims matter more than the molecule. The same peptide can be a laboratory reagent in one context and an unregistered medicine in another, depending on how it is described and what it is sold for. Marketing a medicine in the Netherlands requires a marketing authorisation from the Medicines Evaluation Board (CBG) or the European Medicines Agency, and selling one without it is an offence.
Who supervises what
Several bodies touch the subject, each from its own law.
- The Inspectie Gezondheidszorg en Jeugd (IGJ) enforces the Geneesmiddelenwet. It can impose administrative fines on sellers who market unregistered medicines or make medicinal claims, and it publishes those decisions.
- The Nederlandse Voedsel- en Warenautoriteit (NVWA) supervises food, supplements and consumer products under the Warenwet. A peptide presented as a supplement or food falls under its remit.
- Customs checks imports from outside the EU. Medicines without authorisation can be seized at the border; reagents need accurate declarations.
- The Dopingautoriteit applies the WADA prohibited list for athletes. Most peptide hormones and growth factors are on it.
What RUO means in practice
For a seller of research peptides the category comes with obligations that are visible on the product and the site.
- Products are labelled for research use and not for human consumption, with a batch code on every vial.
- Each batch has a certificate of analysis for purity, and where relevant endotoxins and heavy metals, published for the buyer to check.
- The seller makes no claim that a product treats, prevents or improves any condition, and gives no instruction for use in humans.
- Information on this site, including the dosage summaries drawn from published studies, describes research context and is not advice to use any product.
- The buyer accepts in the terms of sale that the products are reagents and takes responsibility for how they are handled.
Not legal advice
This page summarises public Dutch and European rules as they stand at the date above. It is general information from a seller of research peptides, not legal advice, and enforcement practice changes. The primary sources below are the place to check the current text of the law and the regulators' published decisions.
Frequently asked questions
- Are research peptides legal in the Netherlands?
- Selling peptides as laboratory reagents is not prohibited in itself. What the Geneesmiddelenwet prohibits is presenting an unregistered substance as a medicine, for example by claiming it treats a condition or by selling it for human use. The product, its labelling and its marketing together decide which rules apply.
- How can I tell whether a supplier is a genuine RUO seller?
- Look for a certificate of analysis per batch, a batch code on every vial, clear research-use-only labelling, and the absence of medical claims. A seller that promises results for a health condition is making a medicinal claim, whatever the label says.
- Do doping rules apply to peptides?
- Many peptides, including growth hormone secretagogues and growth factors such as TB-500, appear on the WADA prohibited list under peptide hormones and growth factors, and unregistered peptides such as BPC-157 fall under non-approved substances. The Dopingautoriteit applies that list in the Netherlands. That is a sports rule, separate from the medicines law.