Fig. 3.
Inhibition of the autoantibodies immunoassay by recombinant human GPIHBP1. Serum samples from six cases of the GPIHBP1 autoantibodies syndrome were spiked with increasing amounts of recombinant human GPIHBP1 (21, 42, 85, 170, or 340 ng/ml) before being added to wells of a GPIHBP1 autoantibodies ELISA plate. Plotted are the absorbance at 450 nm measured in all spiked samples.