Table 1. Inclusion and exclusion criteria in our study.

Inclusion criteria	Exclusion criteria
CDC test negative on the day of transplant	Existed DSA on the day of transplant
WBC count, total platelet count, and renal function within normal limits	Experienced proved bacterial and fungi infection at time of transplantation and (or) blood collection
Took FK506+MMF+Pred for their long-term maintenance immunosuppressant	Undertook organ transplantation previously
	Had a history of malignancy
	Serum positive for HIV, HCV antibody, or HBsAg (the latest result before transplantation)
	Pregnancy at time of blood collection
	Received a lymphocyte depleting therapy

Note:

CDC, complement-dependent cytotoxicity; WBC, white blood cell; Pred, prednisolone; DSA, donor specific antibody; HIV, human immunodeficiency virus; HCV, hepatitis C virus; HBsAg, hepatitis B surface antigen.