The Eagle Biosciences Human Periostin ELISA Assay Kit (enzyme-linked immunoassay kit) is intended for the quantitative determination of human periostin levels in serum or plasma samples. The Eagle Biosciences Human Periostin ELISA Assay Kit is for research use only and not to be used in diagnostic procedures. Sample Types: serum, plasma. Range: 0 - 4000 pmol/l. Sensitivity: LOD: 20 pmol/l (0 pmol/l + 3 SD); LLOQ: 62.5 pmol/l. Time: 5.5 hours ? This sSEMA4D ELISA utilizes two monoclonal anti-human Semaphorin 4D antibodies, both recognizingconformational epitopes on Semaphorin 4D. The epitopes have been mapped by overlapping cyclic peptides and shown to involve amino acids AA30-AA34 and amino acids AA238-AA241, respectively.