Provided below are ELISA kits targeting G protein signaling modulator 3, a human protein encoded by GPSM3. This protein is 160 amino acids long with a reported mass of 17.9 kDa. This is reported to be a cytoplasmic protein. Other alias names for this protein include: G-protein signaling modulator 3 (AGS3-like C. elegans), G-protein signalling modulator 3 (AGS3-like C. elegans), activator of G-protein signaling 4, AGS4, G18, G18.1a, and G18.1b.