DIC Score Calculator

DIC Score Calculator for Hematology. A documented legacy ISTH 2001 total at least 5 is compatible with its overt-DIC criterion only in a suitable clinical setting. Below 5 neither diagnoses non-overt DIC nor excludes an evolving process. This is not the complete 2025 scoring algorithm.

For shared guidance on choosing a tool and documenting results, read the clinical calculator workflow.

How this calculator works

This is a legacy ISTH 2001 documented-total interpretation companion (0-8), with the overt-DIC threshold at least 5 in a compatible clinical setting. It does not calculate raw laboratory points or implement the 2025 update.

When to use this calculator

Use only after the named source assessment is complete and documented. This companion interprets entered totals or subtotals; it does not recreate missing source items or authorize a treatment decision.

Inputs used

  • Documented legacy ISTH 2001 overt-DIC total
  • Clinical assessment

Clinical interpretation

A documented legacy ISTH 2001 total at least 5 is compatible with its overt-DIC criterion only in a suitable clinical setting. Below 5 neither diagnoses non-overt DIC nor excludes an evolving process. This is not the complete 2025 scoring algorithm.

Worked example

Fictional teaching case. Documented legacy ISTH 2001 overt-DIC total: 7; Clinical assessment: Compatible underlying condition and all legacy score items assessed. Result: 7 points. Compatible with legacy overt-DIC score criterion. A total below 5 neither diagnoses non-overt DIC nor excludes evolving DIC. Repeated clinical/laboratory assessment and a current hematology pathway are required.

Limitations and safety notes

The 2025 ISTH scoring update is acknowledged, but its complete primary laboratory table was not accessible for verification. No new D-dimer multiples or laboratory boundary conventions are invented. This historical companion must not be presented as the current complete DIC diagnostic algorithm.

Frequently asked questions

Does this reproduce the full source instrument?

The 2025 ISTH scoring update is acknowledged, but its complete primary laboratory table was not accessible for verification. No new D-dimer multiples or laboratory boundary conventions are invented. This historical companion must not be presented as the current complete DIC diagnostic algorithm.

References

  • Original ISTH 2001 scoring-system publication identity. https://doi.org/10.1055/s-0037-1616068
  • BCSH primary DIC guideline, clinical/laboratory integration and legacy score threshold. https://onlinelibrary.wiley.com/doi/10.1111/j.1365-2141.2009.07600.x
  • 2025 ISTH updated definition and scoring, abstract only; full scoring table not verified. https://pubmed.ncbi.nlm.nih.gov/40216223/

Editorial review and citation methodology

Maintained by the Quick Medical Calculator Editorial Team. Content record date: September 9, 2026. A content date is not evidence of independent clinical review. Individual clinical sign-off is not recorded on this page.

  • Prefer original validation studies for scoring systems and prediction tools.
  • Use current specialty society guidance, transplant allocation policy, public health guidance, or regulator resources when they govern clinical use.
  • Include limitations and safety notes when a calculator is population-specific, context-dependent, or unsuitable as a standalone decision tool.

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