Elias Salvador Tasayco

Park W. Waldroup I think FTU, in a generic sense, is largely meaningless from a biological effect perspective but provides a moderately useful index against which phytases can be traded and registered with the appropriate authorities. From the perspective of the animal though, FTU (which is typically measured with substrate, cation, pH etc conditions of limited practical relevance), is poorly corr ...

in our many studies involving numerous phytase products, it seems like the term FTU is totally meaningless. supposedly 500 FTU from phytase A should be equal to 500 FTU from phytase b but seldom is.