Human TNFRSF13B ELISA development kit contains the key components required for the quantitative measurement of natural and/or recombinant TNFRSF13B in a sandwich ELISA format within the range of 16-2,000 pg/mL. Using the ELISA protocol described below, this kit provides sufficient reagents to assay TNFRSF13B in approximately 1,000 ELISA plate wells.