RumacCalcRumacCalcRumacCalc is a lightweight, web-based tool designed to assess acetaminophen toxicity quickly within the 4–24 hour window using the Rumack-Matthew Nomogram.
May 1, 2025Updated
1.0.0Version
FreePricing
100+Users
• About
Simplified Toxicity Calculator
Simplified Toxicity Calculator: Quickly assess risk based on serum APAP level and time since ingestion.
RSTI Management Support
RSTI Management Support Supports repeated supratherapeutic ingestion (RSTI) scenarios with cumulative dose evaluation.
Visual Nomogram Integration
Visual Nomogram Integration automatically plots values on a visualized Rumack-Matthew curve.
No login is required
No login is required. Use instantly in emergencies — no account or setup is needed.
Free and mobile-friendly
Free and mobile-friendly, 100% browser-based, and responsive on any mobile, tablet, or desktop device.
• Changelog
Version 1.0.0
• Initial release of the product
• FAQ
Who is RumacCalc for?
Emergency providers, clinical toxicologists, nurses, and pharmacists manage acute APAP overdoses.
What data do I need to use it?
Time since ingestion (in hours) and serum acetaminophen level (in mcg/mL or μmol/L).
Does it recommend treatment?
It provides clear visual placement on the treatment line. For dynamic NAC dosing and late presentations, use ApapTox.
Can I use this for chronic, unknown, or complex overdose cases?
No — RumacCalc is not suitable for: • Delayed presentations (>24h) • Repeated supratherapeutic ingestion (RSTI) • Unknown ingestion times • Co-ingestions or liver disease • For these more sophisticated cases, use ApapTox, a comprehensive clinical decision-support system that includes lab-guided risk assessment, NAC dosing, dialysis criteria, and transplant evaluation.
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