Estimation of haemoglobin is still undertaken routinely before ENT surgery in many centres despite evidence that it is unnecessary, traumatic and expensive. The haemoglobin was estimated of all 372 children about to undergo ENT surgery in a busy district general hospital over a one year period. No child was noted to be clinically anacmic, and no child had a haemoglobin of less than 9 g/dl. Of 18 children with a haemoglobin level of 10.5 or less, 10 had their operations postponed and eight did not. There were no complications in the latter group. We can find no published evidence that operating on children with mild anaemia is unsafe. Ceasing routine pre-operative haemoglobin estimation would safely save an estimated £9000 per year in our unit.