A number of ELISA Kits are available that target SPENCDI, an alias of the protein, acid phosphatase 5, tartrate resistant. The human protein, encoded by the gene ACP5, is an enzyme and member of the Metallophosphoesterase superfamily, Purple acid phosphatase family. Additional synonyms or past names for this protein may include: HPAP|TRACP5a|TRACP5b|TRAP|TrATPase. Homology is conserved in other species, such as Mouse, Rat, Arabidopsis, Zebrafish, Frog, Chicken.