New guidance from MRA on treatment with intravenous acetylcysteine for paracetamol overdose was released in September 2012 can be found at:
http://www.mhra.gov.uk/Safetyinformation/DrugSafetyUpdate/CON185624 . This includes a nomogram. Please note the units (mg/L) in use in the Leeds Hospitals pathology laboratories are on the left axis.
Guidance on paracetamol dosing was published in June 2011 and can be found at: