🩸 Glasgow-Blatchford Score (GBS) Calculator
Calculate the Glasgow-Blatchford Score (GBS) for upper gastrointestinal bleeding to predict the need for intervention such as transfusion, endoscopy or surgery.
A GBS of 0 supports safe outpatient management in selected patients.
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When to use
Emergency risk stratification of upper GI bleeding. A score of 0 identifies very-low-risk patients who may be managed as outpatients.
How it works
Points from urea, hemoglobin (sex-specific), systolic BP, pulse ≥ 100, melena, syncope, liver disease and heart failure (range 0–23). 0 = very low risk; higher = more likely to need intervention.
Key points
- A GBS of 0 supports safe outpatient management in selected patients.
- Assesses need for intervention, not mortality.
- Use alongside endoscopy timing and clinical judgement.
References
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Sex | Male |
|---|---|
| Blood urea | 12 mmol/L |
| Hemoglobin | 110 g/L |
| Systolic BP | 110 mmHg |
| Pulse ≥ 100 /min | No |
| Melena | No |
| Syncope | No |
| Liver disease | No |
| Heart failure | No |
→Glasgow-Blatchford Score7
- Interpretation：≥ 1: admit and assess; higher scores more likely to need intervention
| Sex | Female |
|---|---|
| Blood urea | 12 mmol/L |
| Hemoglobin | 110 g/L |
| Systolic BP | 110 mmHg |
| Pulse ≥ 100 /min | Yes (+1) |
| Melena | Yes (+1) |
| Syncope | Yes (+2) |
| Liver disease | Yes (+2) |
| Heart failure | Yes (+1) |
→Glasgow-Blatchford Score12
- Interpretation：≥ 1: admit and assess; higher scores more likely to need intervention
Frequently asked questions
- What is Glasgow-Blatchford Score (GBS) Calculator?
- Calculate the Glasgow-Blatchford Score (GBS) for upper gastrointestinal bleeding to predict the need for intervention such as transfusion, endoscopy or surgery.
- How is Glasgow-Blatchford Score (GBS) Calculator calculated? What is the core formula?
- Points from urea, hemoglobin (sex-specific), systolic BP, pulse ≥ 100, melena, syncope, liver disease and heart failure (range 0–23). 0 = very low risk; higher = more likely to need intervention.
- When is Glasgow-Blatchford Score (GBS) Calculator used?
- Emergency risk stratification of upper GI bleeding. A score of 0 identifies very-low-risk patients who may be managed as outpatients.
- What are the key clinical points for Glasgow-Blatchford Score (GBS) Calculator?
- A GBS of 0 supports safe outpatient management in selected patients. Assesses need for intervention, not mortality. Use alongside endoscopy timing and clinical judgement.
- What are the limits and cautions when using Glasgow-Blatchford Score (GBS) Calculator?
- For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
- How is Glasgow-Blatchford Score (GBS) Calculator calculated in practice? Can you show a worked example?
- Inputs: Sex Male, Blood urea 12 mmol/L, Hemoglobin 110 g/L, Systolic BP 110 mmHg, Pulse ≥ 100 /min No, Melena No, Syncope No, Liver disease No… → Result: Glasgow-Blatchford Score 7（Interpretation: ≥ 1: admit and assess; higher scores more likely to need intervention） Inputs: Sex Female, Blood urea 12 mmol/L, Hemoglobin 110 g/L, Systolic BP 110 mmHg, Pulse ≥ 100 /min Yes (+1), Melena Yes (+1), Syncope Yes (+2), Liver disease Yes (+2)… → Result: Glasgow-Blatchford Score 12（Interpretation: ≥ 1: admit and assess; higher scores more likely to need intervention）