Peptides MEX / Glossary
Research Use Only (RUO): meaning and label limitations
Research Use Only is the full phrase; RUO is its abbreviation.
Updated · Sources and editorial standards
A declared purpose, not an analysis
Research Use Only declares a research purpose. The cited FDA guidance specifically concerns in vitro diagnostic products in the United States. Its scope should not be converted into general authorization for other product categories or for Mexico. The phrase also does not document composition or purity.
RUO and IUO are not interchangeable
IUO means Investigational Use Only and has a different context within in vitro diagnostic labeling. Retain the full phrase, product category and applicable source when reviewing a document. An RUO label does not establish efficacy or replace clinical authorization.
Questions about this reference
Sources and original reading
- FDA: Distribution of In Vitro Diagnostic Products Labeled for Research Use Only or Investigational Use Only
- FDA: In Vitro Diagnostic Device Labeling Requirements
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