Mi. Gomez et al., PLASMA-LEVELS OF 8-METHOXYPSORALEN AFTER BATH-PUVA FOR PSORIASIS - RELATIONSHIP TO DISEASE SEVERITY, British journal of dermatology, 133(1), 1995, pp. 37-40
Plasma levels of 8-methoxypsoralen (8-MOP) were determined by high-pre
ssure liquid chromatography in 19 patients with psoriasis who were rec
eiving bath-PUVA treatment, at different time points after the psorale
n bath. The levels of 8-MOP varied between <5ng/ml (lower limit of det
ection) and 34 ng/ml, and we found a relationship between the plasma p
soralen levels and the severity of the disease.