Table 2.

Serum thiol and disulphide levels in psoriasis and patient groups

Variable	Patient group	Control group	P-value
Native thiol	481 ±47	469 ±49	0.101
Total thiol	513 ±69	513 ±54	0.984
Disulphide	18.38 ±4.86	22.32 ±5.30	< 0.001
SS/SH	3.82 ±0.98	4.79 ±1.05	0.497
SS/total SH	3.53 ±0.84	4.35 ±0.85	< 0.001
SH/total SH	93 ±1.68	91 ±1.79	< 0.001

SS – disulphide (μmol/l), SH – native thiol (μmol/l), total SH – total thiol (μmol/l), SS/SH – ratio of disulphide/native thiol (%), SS/total SH – ratio of disulphide/total thiol (%), SH/total SH – ratio of native thiol/total thiol (%).