“…These 'nomograms' lines are sometimes referred to as the high risk (300 line; i.e. a line commencing from a paracetamol concentration of 300 mg/L at four hours postingestion), the probable risk (200 line), and the possible risk (150 line) used to guide treatment in such countries as Canada, Australia, New Zealand, and the US (Rumack 1975;Prescott 1979;Smilkstein 1991;Daly 2008). In the UK in 2012, the treatment line was lowered further to the 100 mg/L (660 μmol/L) line (MHPRA 2012).…”