Letter from Dr W J Jenkins North East Thames RTC to Dr Richard S Lane regarding a visit to Brentwood RTC. The letter encloses a copy of David Danes draft report which discusses Australia (hepatitis-associated) Antigen in relation to blood transfusion and associated matters the testing of blood donations for its presence reversed Passive Haemagglutination (RPH) in all RTCs screening of blood donation for HBsAg exclusion of donors with jaundice and testing for non-A non-B hepatitis viruses.