Serum tissue transglutaminase (tTg) was the main coeliac marker and had to be analysed at Derby, so took a few days extra. tTg level was 0.7 u/ml (should be between 0 – 5). Two immunoglobin results are also relevant, with IGA at 2.62 g/l (0.8 – 4) and IGG at 10.3 g/l (6 – 16). Normal, no further action. Will probably have a few (too many) drinks over Xmas.