What are the limitations of the non overt dic score?

While the non overt dic score is highly validated, it should not replace clinical judgment. OpiCalc provides the latest evidence-based limitations for the non overt dic score to ensure safe bedside use and optimal diagnostic accuracy.

How does the non overt dic score compare to other hematology scores?

The non overt dic score is a gold-standard diagnostic tool. OpiCalc provides side-by-side clinical guidance to help clinicians choose the most specific evidence-based tool for their patient's presentation.

Is the non overt dic score free to use?

Yes. OpiCalc provides the non overt dic score completely ad-free and optimized for mobile bedside use, ensuring you can calculate medical risk swiftly and without distraction.

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ISTH Non-Overt DIC Score

ISTH Non-Overt DIC Score — Clinical decision support tool placeholder.

ISTH Non-Overt DIC Score

This clinical tool is scheduled for full implementation. Check back soon for the verified version.

Guidelines & Evidence

Clinical Details

Section 1

When to Use

Identifying early, "compensated" Disseminated Intravascular Coagulation (DIC) before overt failure occurs.

Monitoring patients with high-risk underlying conditions (Sepsis, Trauma, Malignancy).

Predicting the progression to overt DIC.

The 'Non-Overt' Phase

Non-overt DIC represents a stressed coagulation system where factor consumption is compensated by increased synthesis. Clinical bleeding or thrombosis may not yet be apparent.

Section 2

Formula & Logic

Criteria (Points)

Parameter	Criteria	Points
Platelet Count	100 - 150 × 10⁹/L	1
	< 100 × 10⁹/L	2
PT Prolongation	3 - 6 seconds	1
	> 6 seconds	2
D-dimer / FDP	Moderate increase	1
	Strong increase	2
Antithrombin	Reduced (< 70-80%)	1
Protein C	Reduced (< 70-80%)	1

Interpretation

Score ≥ 5: Suggestive of Non-Overt DIC. Monitor daily.

Score < 5: Negative for DIC pattern.

Section 3

Pearls/Pitfalls

Natural Anticoagulants

The inclusion of Antithrombin and Protein C sets this apart from the overt DIC score. These markers are often the first to drop as they are consumed while trying to inhibit the massive thrombin generation.

Evidence Appraisal

Primary Strategy

Towards definition, clinical and laboratory criteria, and a scoring system for disseminated intravascular coagulation.

Taylor FB Jr et al. • Thrombosis and Haemostasis. 2001;86(5):1327-30.

View Source

Section 5

Literature

Organization

Developed by the Scientific and Standardization Committee (SSC) of the International Society on Thrombosis and Haemostasis (ISTH).

Last Comprehensive Review: 2026

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PBT

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Haemophilia Severity Classification

Factor Inhibitor Bethesda Titre Interpreter

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ISTH Non-Overt DIC Score

ISTH Non-Overt DIC Score — Clinical decision support tool placeholder.

ISTH Non-Overt DIC Score

This clinical tool is scheduled for full implementation. Check back soon for the verified version.

Guidelines & Evidence

Clinical Details

Section 1

When to Use

Identifying early, "compensated" Disseminated Intravascular Coagulation (DIC) before overt failure occurs.

Monitoring patients with high-risk underlying conditions (Sepsis, Trauma, Malignancy).

Predicting the progression to overt DIC.

The 'Non-Overt' Phase

Non-overt DIC represents a stressed coagulation system where factor consumption is compensated by increased synthesis. Clinical bleeding or thrombosis may not yet be apparent.

Section 2

Formula & Logic

Criteria (Points)

Parameter	Criteria	Points
Platelet Count	100 - 150 × 10⁹/L	1
	< 100 × 10⁹/L	2
PT Prolongation	3 - 6 seconds	1
	> 6 seconds	2
D-dimer / FDP	Moderate increase	1
	Strong increase	2
Antithrombin	Reduced (< 70-80%)	1
Protein C	Reduced (< 70-80%)	1