Rumack-Matthew Nomogram Plotter
How to use: Enter the exact time that has elapsed since the acute ingestion.
The nomogram is only valid for blood samples taken between 4 and 24 hours post-ingestion.
Use the "Hours" and "Minutes" fields together to specify the time of the lab draw (e.g., for a draw at 4.5 hours, enter 4 in Hours and 30 in Minutes).
150 µg/mL Line
300 µg/mL Line
Enter data above and click "Plot Level" to see the result.
Disclaimer: This application is for educational purposes only and does not replace bedside clinical assessment or medical toxicology evaluation. The Rumack-Matthew nomogram is a tool to be used by qualified medical professionals for risk assessment after a single, acute ingestion of acetaminophen.