Figure 7.

Plots of serum paracetamol concentrations against timing of the test superimposed onto the standard and high risk treatment nomograms as found in the British National Formulary. 7a represents patients discharged from the Emergency Department, and 7b those requiring medical admission. Where information on amount ingested was reported, this has been incorporated by the use of different point markers for those who ingested <8 g, 8–16 g and over 16 g paracetamol. Episodes where the ingested amount was not reported by the patient have been marked with a cross. Those patients for whom the timing of the overdose was unclear have not been included. Reported ingestion up to 8 g Paracetamol (○); Reported ingestion 8–16 g Paracetamol (□); Reported ingestion >16 g Paracetamol (▵); Unknown quantity of paracetamol taken (×)