Table 3. Correlations between serum levels of metabolites and CP equivalent (mg) or duration of illness (months).

	Tyr	5-HT
CP equivalent	r = –0.488	r = 0.397
(mg)	(p = 0.0133)	(p = 0.0491)
	D-Ser	Glu	3-HB	Arachidonic acid	Linoleic acid
Duration of illness	r = 0.478	r = 0.397	r = 0.540	r = 0.630	r = 0.415
(months)	(p = 0.0157)	(p = 0.0491)	(p = 0.0064)	(p = 0.0007)	(p = 0.0390)