Renal Transplant Patients Biopsied for Cause and Tested for C4d, DSA, and IgG Subclasses and C1q: Which Humoral Markers Improve Diagnosis and Outcomes?

Table 8

DSA, IgG subclasses, and C1q detection in C4d+ patients.

Assay	Type of DSA detected [# of patients]
	No DSA	Class I only	Class II only	Class I+II
Standard	0	5	3	15
C1q	7	6	9	1
Assay	Mean total DSA MFI			Average # of DSA
		Class II only	Class I+II
Standard	7,046	8,320	12,485	4
C1q	14,460	17,864	16,729	1