abstract:The Ham test is a test used in the diagnosis of paroxysmal nocturnal hemoglobinuria (PNH). The test involves placing red blood cells in mild acid; a positive result (increased RBC fragility) indicates PNH or Congenital dyserythropoietic anemia.
Richmond's primary schools are also known for getting the best test results in the country - but the school opened in 1952 to serve this council estate in Ham faces the type of challenges more usually associated with more deprived boroughs.