This practice does not account for the PL content of the basal diet or various diet ingredients. In addition, without full disclosure and description of the soy lecithin or PL product’s composition, it is difficult to establish the actual PL supplementation of the diet. Some authors state only the dietary inclusion rate of PL mixtures. Some authors also provide the PL purity of the mixture with or without the PC concentration, while others report only the PC concentration of the PL mixture.