Practice guide
Finding the Requirements for a Product
A disciplined route from product identity and intended use to a documented federal requirement register.
Read the guideFederal regulation
Part 809 establishes labeling provisions for in vitro diagnostic products for human use. Immediate-container labels and accompanying instructions serve different functions. Intended use, specimen requirements, procedure, limitations and performance information must correspond to the actual product. Research-use and investigational-use statements are conditional regulatory categories, not alternative labels that make a clinical diagnostic product exempt from premarket requirements.
IVD products include reagents, instruments and systems used with specimens from the human body for relevant diagnostic purposes. The intended use establishes the context for the instructions and regulatory pathway. Identify the analyte or function, specimen, user and setting; a general statement such as laboratory use does not describe every clinically relevant limitation. FDA labeling explanation.
Section 809.10(a) addresses the information needed on the immediate container, with provisions for small containers and other circumstances. Product identification, quantity, storage and other applicable information help users identify the correct material and its condition. The outer package and container must be assessed together rather than assuming one can omit every required statement. Part 809.
The accompanying labeling requirements address intended use, test principles, reagents, specimen handling, procedures, calculations and other applicable information in the specified organization. Instructions should match the marketed system, including compatible components and necessary controls. General laboratory knowledge cannot replace product-specific directions when the method depends on particular preparation or operating steps. FDA instructions requirements.
Performance characteristics and limitations help users interpret results within the test’s supported conditions. Interferences, specimen restrictions and procedural limitations can affect the meaning of a result. Labeling review should connect these statements to the underlying evidence and the actual intended population. A promotional claim cannot expand the supported use without regulatory assessment. Labeling regulation.
FDA’s RUO and IUO guidance explains the importance of the manufacturer’s intended use and distribution practices. A research-use statement is not a device clearance and cannot simply be affixed to a product promoted for clinical diagnosis. Investigation requirements and exemptions must be evaluated separately under their actual conditions. FDA RUO/IUO guidance.
Compare the container, carton, package insert, electronic information and promotion for consistent product identity and use. Check the applicable Part 809 exceptions before omitting information, and examine product-specific requirements. This brief concerns the general labeling framework; it does not establish a universal regulatory conclusion for laboratory-developed tests or a particular laboratory’s activities. FDA IVD labeling resource.
Sources checked 2026-10-19. This is the review date for this profile, separate from any legal effective or compliance date.
codified regulation
21 CFR Part 809www.ecfr.gov
agency explanation
In Vitro Diagnostic Device Labeling Requirementswww.fda.gov
final nonbinding guidance
Distribution of IVD Products Labeled RUO or IUOwww.fda.gov
Practice guide
A disciplined route from product identity and intended use to a documented federal requirement register.
Read the guidePractice guide
A practical examination of identity, method, scope, results and the meaning of a conformity claim.
Read the guide