Table 2 Key findings from The Royal College of Pathologists of Australasia Quality Assurance Programs haemochromatosis gene surveys.

Error rates per sample ranged from 0% to a high of 8.7% for a normal sample.

Most (85/100) samples returned a 0% error rate (ie, 100% correct response).

Overall success rate was 99.47% (3000 correct of 3016 returns).

Overall success rates per assay were 99.61% (1532/1538) for C282Y and 99.32% (1468/1478) for H63D.

Of the 10 surveys, 4 returned a 0% error rate.

A total of 16 errors were observed, 6 for C282Y and 10 for H63D.

One participant was responsible for seven errors in a survey in 2004.

One sample was associated with more than one error—that is, 2 of 23 classified a normal sample as heterozygotic.