Calculator Inputs
Example Data Table
| Patient | Age | eGFR | Creatinine | Albumin Ratio | Systolic | Bicarbonate | Risk Band |
|---|---|---|---|---|---|---|---|
| A | 44 | 74 | 1.0 | 8 | 126 | 24 | Low |
| B | 58 | 34 | 2.4 | 220 | 162 | 20 | High |
| C | 78 | 12 | 5.6 | 540 | 186 | 16 | Very High |
These rows are example values for demonstration. Clinical interpretation always needs real patient context and professional judgment.
Formula Used
The calculator uses a weighted point model. Higher points are assigned to lower eGFR, higher creatinine, albuminuria, elevated blood pressure, low bicarbonate, and important clinical risk flags.
Renal Failure Risk Score = (Total Earned Points ÷ 111) × 100
| Factor | Scoring Rule |
|---|---|
| Age | 50 to 64 = 2, 65 to 74 = 4, 75 or older = 6 |
| eGFR | Below 60 adds risk. Below 15 adds 35 points. |
| Creatinine | 1.3 to 1.9 = 4, 2.0 to 3.4 = 8, 3.5 to 4.9 = 12, 5.0 or higher = 15 |
| Albumin ratio | 10 to 29 = 3, 30 to 299 = 7, 300 or higher = 12 |
| Systolic pressure | 140 to 159 = 3, 160 to 179 = 6, 180 or higher = 8 |
| Bicarbonate | 18 to 21.9 = 3, below 18 = 6 |
| Clinical flags | Diabetes 6, hypertension 4, heart failure 5, dehydration 3, nephrotoxic medicines 3, reduced urine 6, swelling 3, nausea 2 |
How to Use This Calculator
- Enter the patient name, age, and available kidney related lab values.
- Mark important risk conditions, symptom clues, and medicine exposure factors.
- Press Calculate Risk to show the result above the form.
- Review the risk band, urgent flags, and suggested next step prompts.
- Use CSV or PDF export to save the result for discussion.
- Treat the output as a screening aid, not a diagnosis or emergency decision tool.
Frequently Asked Questions
1. Is this calculator a medical diagnosis?
No. It is an educational screening aid. Kidney failure diagnosis needs full clinical evaluation, repeat testing, history, medications, examination, and professional judgment.
2. What inputs matter most?
eGFR, creatinine, urine albumin ratio, blood pressure, and reduced urine output usually influence the score strongly because they reflect kidney function and current stress.
3. Can normal creatinine still hide risk?
Yes. Risk can still rise if eGFR is reduced, albuminuria is present, blood pressure is high, or symptoms and comorbidities suggest evolving kidney injury.
4. Why are there symptom checkboxes?
Symptoms such as swelling, nausea, dehydration, and reduced urine output may add useful context when labs alone do not fully show current clinical stress.
5. What does a very high score mean?
It means the entered data strongly suggest serious risk. That should prompt urgent medical review, especially with severe symptoms or rapidly worsening values.
6. Can I use this for chronic kidney disease follow up?
Yes, for general tracking and discussion support. However, chronic disease follow up should always use clinician guidance and individualized treatment targets.
7. Does the result replace emergency care?
No. Emergency symptoms, sudden urine drop, confusion, chest pain, severe weakness, or dangerous lab changes should be handled through urgent medical services.