During direct immunofluorescence testing of renal biopsy specimen, lumpy bumby immune deposits are seen with conjugated antibodies against:

Direct immunofluorescence of renal biopsy specimen Direct immunofluorescence with Conjugated antibodies against IgG, IgM, and IgA to detect the presence of "lumpy-bumpy" immune deposits and Linear IgG or IgA antibodies bound to GBM antibodies against trapped complement proteins (C3 and C4). Ref: Harrison-18, P-2339.