Table 4. Summary of biochemical findings.

	n	%
Elevated
Asp, urine	54/62	87
Gly, urine	23/62	37
Gly, plasma	0/67	0
Tau, plasma	46/67	69
Reduced
Cys, plasma	46/64	72
Met, plasma	15/67	22

Abbreviations: Asp, aspartic acid; Cys, cystine; Gly, glycine; Met, methionine; Tau, taurine.