WHO prequalification: the international quality benchmark

What prequalification is

WHO prequalification is not a national regulatory system but a program run by the World Health Organization that assesses the quality, safety, and efficacy - or, for diagnostics, performance - of health products against international standards.

It exists because many countries, especially low- and middle-income ones, lack the capacity to evaluate complex products themselves, and because United Nations agencies and major funders need a trusted basis on which to buy medicines, vaccines, diagnostics, and vector-control products at scale.

What it covers

The program assesses medicines - historically concentrated on priority diseases such as HIV, tuberculosis, malaria, influenza, and neglected tropical diseases - plus vaccines, in-vitro diagnostics, immunization devices, cold-chain equipment, and vector-control products.

Assessment includes review of the product dossier, inspection of manufacturing sites for compliance with international good manufacturing practice, and continued oversight after listing, including re-inspection and testing of samples.

How it relates to national regulators

Prequalification does not replace national marketing authorization. A prequalified product still requires registration in each country where it will be sold. Its role is to give national authorities - particularly those with limited review capacity - a rigorous independent assessment they can rely on, and to make products eligible for procurement by United Nations agencies and financing institutions.

The program also works in the other direction: it supports collaborative registration procedures in which a prequalified or stringently approved product moves through national registration faster, on the basis of the assessment already done.

Closely related is the WHO's system for designating WHO-listed authorities: national regulators whose own performance is benchmarked against international standards and whose decisions can then anchor reliance by others.

Using this profile

Administrators and researchers should treat the prequalification list as a statement about product quality against international standards and procurement eligibility, not as proof of legal market status in any specific country.

For cross-country comparison: prequalification is the connective tissue between strong national regulators and countries without equivalent capacity, and between manufacturers and pooled global procurement. The program portals listed in this profile's internal reference record are the primary sources for current listings and procedures.