Research use only (revision 36)

Research use only is a label applied by a seller to material offered for laboratory work rather than for administration to humans or animals. The phrase, and its abbreviation RUO, appears on the great majority of research-peptide listings, invoices and certificates.^[1]

The label is a commercial and regulatory category, not an approval. Material carrying it has not been assessed by any medicines regulator, is not manufactured under the obligations that apply to medicines, and is not approved for human use in any major jurisdiction. Its identity, purity, sterility and endotoxin content are not assured by anybody outside the supply chain that produced it.^[2][3]

What the label does is locate material outside the medicines framework, and in doing so it locates the seller outside the obligations that framework imposes. That is the whole of its function, and understanding it is a precondition for reading anything else on this wiki about suppliers, certificates or testing.

The obligations that attach to a medicine and do not attach to research-use-only material are extensive. The following are the ones that bear directly on what a purchaser can and cannot infer.

• No marketing authorisation. No regulator has assessed the material for quality, safety or efficacy for any use.
• No manufacturing authorisation. Production need not take place under good manufacturing practice, and no inspectorate has visited the site.^[2]
• No pharmacopoeial compliance requirement. Compendial monographs and general chapters describe what a determination should look like; nothing requires unregulated material to meet them.^[3]
• No sterility or endotoxin requirement. A lyophilised powder is not sterile unless it is stated to be, and an absence of statement is not a statement of absence.
• No pharmacovigilance. There is no adverse-event reporting route, so no signal accumulates anywhere.
• No labelling standard. Strength, fill convention and storage statements follow no prescribed form; see the discussion of nominal fill at Peptide content.

A frequent inference runs: the supplier is a registered company, therefore its material is regulated. It does not follow. A business registration is a licensing fact — it establishes that an entity exists, has a registered address, and has declared a scope of business.^[4] It says nothing about quality systems, and a declared business scope that includes chemical manufacture is a permission to trade rather than an assurance about output.

The same distinction applies to certifications a seller may cite in its own material. A quality-system claim is not a fact until it has been assessed against the applicable framework by somebody empowered to assess it, and a testing laboratory's competence is a matter of accreditation to a recognised standard rather than of self-description.^[2][5] Where this wiki repeats such a claim, it attributes it to the organisation's own material and says that it has not been corroborated.

Because no authority assesses the material, every assurance a purchaser has originates inside the supply chain that produced it. A certificate is issued by the seller; an independent report is commissioned by the purchaser on a sample the purchaser chose; a community tally aggregates whoever chose to submit. See Blind sampling for why none of these is a sample of anything.

This is not an argument that the material is bad. It is an argument that the ordinary reasons for believing a medicine is what it says it is do not apply, and that a purchaser who wants a comparable degree of confidence has to construct it from documents — which is why the documentation sections of this wiki are as long as they are.^[6]

The legal position differs materially between jurisdictions and this article does not attempt to state it for any of them. Three points are general enough to record.

First, the label follows the seller's declared intent, not the buyer's. A jurisdiction that restricts a substance does not stop restricting it because a listing says "research use only", and in several jurisdictions the phrase has been held not to affect the analysis at all.^[1]

Second, importation of such material for personal use is unlawful or restricted in many jurisdictions, and seizure is a documented outcome rather than a theoretical one. Where seizure occurs the ordinary consequence is loss of the consignment; further consequences vary.^[1]

Third, the position changes. Statements about legality on this wiki carry the jurisdiction and the date of the source they rest on, and a reader relying on one should check whether it is current. PeptidePedia describes the legal position and does not advise on it.

• Certificate of analysis
• Bacterial endotoxin test
• Customs seizure
• Peptide supply chain
• Blind sampling
• Peptide content

• Project:Medical disclaimer — the wiki's standing position on what it does and does not do.
• Project:Vendor notability — what a supplier article may and may not contain, and why.