Analyte    Normal levels    Toxic Levels    Fatality Levels   
 Venlafaxine  0.25-0.75mg/L  1-1.5mg/L  6.6mg/L
 Venlafaxine (Liver)  No data available  No data available  21-430mg/Kg
 Warfarin  1-10mg/L  10-12mg/L  100mg/L
 Zaleplon  15-49ng/mL  37-130ng/mL  2200ng/mL
 Zolpidem  0.08-0.2mg/L  0.5mg/L  2-4mg/L
 Zopiclone  0.01-0.05mg/L  >0.15mg/L  0.4-3.9mg/L
 Zopiclone (Liver)  No data available  No data available  0.8-8.7mg/kg
 Zuclopenthixol  5-100ng/mL  150-300ng/mL  391ng/mL

The Forensic Toxicology Service is pleased to supply the following analyte references ranges

These results are collated from a number of references. However, we cannot assume responsibility for the contents of these ranges and they are provided solely as a general reference resource
Bioanalytics and Forensic Toxicology