Provided below are ELISA kits targeting follistatin like 1, a human protein encoded by FSTL1. This protein is 308 amino acids long with a reported mass of 35 kDa. 2 isoforms have been identified. This is reported to be a secreted protein. Glycosylation sites have been reported. Other alias names for this protein include: follistatin-related protein 1, follistatin-like protein 1, FRP, FSL1, OCC-1, OCC1, and tsc36.