Provided below are ELISA kits targeting BPI fold containing family B member 3, a human protein encoded by BPIFB3. This protein is 476 amino acids long, with a mass of 50.3 kDa, and is a member of the BPI/LBP/Plunc superfamily, BPI/LBP family. This is reported to be a cytoplasmic and secreted protein. Glycosylation sites have been reported. Other alias names for this protein include: ligand-binding protein RYA3, long palate lung and nasal epithelium carcinoma-associated protein 3, C20orf185, LPLUNC3.