WHO INTERNATIONAL LABORATORY & COLLABORATING CENTRES FOR
BIOLOGICAL STANDARDS The WHO International Laboratory and
Collaborating Centers for Biological Standards provide
scientific advice and conduct investigational activities needed
to support the WHO's biological standardization programme. These
activities include the preparation of candidate biological
reference materials through coordination of international
collaborative studies and the preparation of scientific reports
on their suitability for submission to the Expert Committee on
Biological Standardization (ECBS) who formally establish them as
WHO Biological Reference Materials. Some of the Collaborating
Centers also serve as custodians of WHO biological reference
materials and they are responsible for their distribution around
the world to qualified applicants. In addition, the scientists
from the WHO Collaborating Centers frequently provide their
expert advice by participating in discussions and providing
input into the drafting of new and revised wr