External quality assurance (EQA) of tissue staining techniques for improving reproducibility standards has been increasingly important in diagnostic pathology.
You can reach examples of stained slides of laboratories participating in some EQA schemes including those run by QualiCont (Hungarian), UK-NEQAS for ICC (British) and NordiQC (Scandinavian countries).
Also, you can find Romanowsky-stained blood smears for EQA interpretation uploaded by the Hematology Program of QualiCont.
QualiCont | UK-NEQAS | NordiQC |