HBsAg in urine was detected in 2 cases out of 16 asymptomatic carriers by radioimmunoassay.
It was noted that HB antigenuria was revealed in 2 out of 3 carriers with chronic nephritis
In a case of HBsAg positive acute hepatitis, HBsAg was detected in urine collected at 9th, 14th and 56th day, in bile at 5th day, in feces at 39th day after the onset of illness: Antigenemia persisted for 35 days.
In a case of chronic nephritis and 5 cases of healthy adult without HB antigenemia, HBsAg was never been detected in urine by radioimmunoassay.
Specificity of HBsAg detected in urine by this method was confirmed by block test using standard human HBs antibody.
