Built and fact-checked by the DocNectar team — see our editorial standards
Key Features
Instant Calculation
Get accurate results in real time with our optimized algorithm.
Mobile Friendly
Fully responsive design. Works on all devices & screen sizes.
Privacy Focused
Your data stays on your device. We don't store any inputs.
100% Free
No hidden costs. This tool is completely free forever.
Albumin/Globulin (A/G) Ratio = Albumin / (Total Protein - Albumin), the standard published formula (globulin is derived as total protein minus albumin). Commonly cited normal reference range is roughly 1.1-2.5. Pure arithmetic on given lab values. For general reference and educational purposes only — not a medical diagnosis. Consult a doctor for actual interpretation of a serum protein panel.
How it works
Enter total protein and albumin from a serum protein panel. The tool derives globulin (total protein minus albumin), then divides albumin by globulin.
- Enter total protein (g/dL).
- Enter albumin (g/dL).
- Click Calculate to see your results.
Examples
Total protein 7.0, Albumin 4.5
Globulin = 7.0 - 4.5 = 2.5 g/dL. A/G ratio = 4.5 / 2.5 = 1.8 — within the commonly cited normal range of 1.1-2.5.
Who should use it
- Reviewing a comprehensive metabolic panel or serum protein panel.
- Liver and kidney disease education.
Industry applications
- Hepatology and nephrology reference
- Clinical education
Advantages
- Simple, standard formula.
- Quick reference against a normal range.
Limitations
- Reference ranges vary slightly by lab.
- Does not replace clinical interpretation.
Common mistakes to avoid
- Entering albumin and total protein in different units (e.g. one in g/dL and one in g/L).
Best practices
- Use total protein and albumin from the same blood draw/report.
Tips
- The A/G ratio is typically interpreted alongside the individual albumin and globulin values, not as a standalone number.