OBJECTIVETo study various experts' opinions on the defifinition and diagnosis of blood stasis in China.

METHODSWe e-mailed the selected experts to explain the purpose of the study and to invite them to participate and asked them to name a time for the investigator to call them. Eight experts and fifive organizations were interviewed in the research community investigating blood stasis in China.

RESULTSSix main categories emerged from the interviews: (1) blood stasis concepts; (2) blood stasis-related biomarkers; (3) methods of diagnosing blood stasis; (4) drugs for promoting blood circulation and dissipating stasis; (5) blood stasis-related diseases; and (6) blood stasis-related societies. The consensus among the interviewed experts was that the defifinition of blood stasis is rather complicated and that there is no gold standard marker for detecting blood stasis.

CONCLUSIONSThis paper acquired experts' opinions on the defifinition and diagnosis of blood stasis in order to establish a modern concept of blood stasis. This paper also developed a diagnostic tool and diagnostic indices for blood stasis and identifified biological indices and pathologic mechanisms related to blood stasis, which might be of great reference value in future blood stasis standardization research.