How are diagnoses of lysosome storage disorders differentiated from congenital disorders of glycosylation? References?

Difficult to differe. Lysosome storage disease, congenital disorders of glycosylation (cdg), peroxisomal disorders, smith-lemli-opitz are "single-gene disorders, most of which demonstrate autosomal-recessive inheritance. These 4 categories of metabolic diseases involve molecules important in cell membranes and share overlapping clinical presentations". (avery's diseases of the newborn, by w. Taeusch, 2005, p. 258).