This multicentre, 1-day cross-sectional study in 69 French ICUs showed that almost half of the patients received insulin, that SC insulin, despite being not recommended, was used in more than one-third of insulin-treated patients, and that hypoglycaemia was infrequent, whereas at least one episode of hyperglycaemia was observed in 45% of the patients. Here, INS is linked to Hypoglycemia.