This also indicates that the forms the minerals are absorbed in most likely are the same regardless of the sources, which further indicates that HMTBa and Gly are separated from the minerals before absorption. The fact that the ATTD of the microminerals is not greater when intake is reduced clearly indicated that the concentration of the mineral in the intestinal
tract does not significantly influence percent absorption and, therefore, also not influence percent excretion. This
is true for all microminerals as well as for Ca and P.