[Serum lipase and amylase activity after endoscopic retrograde pancreatography (author's transl)].

Serum activities of lipase and amylase were measured in 11 patients at short time intervals (-10 min; + 10, 30, 60 min; 2,3,4,6,8,24,48 hours) after an endoscopic retrograde pancreatography. Lipase activity increased rapidly in 9 patients in 10 min after the contrast instillation and obtained its maximum at the first hour of investigation. Amylase activity elevation occurred in 5 patients only and was significantly lower than that of lipase with a flat peak at 1-6 hours.