Ready-to-use ELISA kits are available for the detection of PRDC, an alias of the protein, gremlin 2, DAN family BMP antagonist. The official gene symbol is GREM2. The protein, with a mass of 19.3 kDa and length of 168 residues, is reported to be secreted. It is a member of the DAN family and may be known by other names, including: DAND3, CKTSF1B2, gremlin 2 cysteine knot superfamily homolog, cysteine knot superfamily 1 BMP antagonist 2, DAN domain family member 3, and gremlin-2, and STHAG9.