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

Table 5

Reactivity of monoclonal IgG subclass detection antibodies against control microbeads.

	C4d+ mean MFI	C4d focally positive mean MFI	C4d− mean MFI
Total	12,353	4,771	963
Class I	5,487	443	442
Class II	7,373	4,317	520

MFI cutoff for DSA positivity set at 500.