Albumin globulin ratio in blood test
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Albumin Globulin Ratio in Blood Test: Clinical Significance and Diagnostic Value
Understanding the Albumin Globulin Ratio (AGR) in Blood Tests
The albumin to globulin ratio (AGR) is a simple calculation derived from routine blood tests, dividing the serum albumin level by the globulin level. This ratio is widely recognized as a marker reflecting inflammation, nutritional status, and immune function in the body Yang2022Tan2025Okubo2020+2 MORE.
AGR as a Diagnostic and Prognostic Marker in Disease
Multiple Myeloma, Liver, and Kidney Diseases
AGR has shown significant value in diagnosing and differentiating multiple myeloma (MM) from liver and kidney diseases. Patients with MM, liver, or kidney disease typically have lower AGR compared to healthy individuals, with MM patients showing the lowest ratios. AGR demonstrated high sensitivity and diagnostic accuracy for MM, making it a cost-effective and accessible tool for clinical decision-making .
Infections and Inflammatory Conditions
In the context of periprosthetic joint infections (PJI), a lower AGR is associated with infection, and its diagnostic performance is comparable to or better than traditional markers like erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP). Combining AGR with CRP further improves diagnostic accuracy for PJI Wang2023Wu2022Choe2023. Similarly, in rheumatoid arthritis, AGR is lower in patients and decreases with increasing disease activity, making it a useful marker for monitoring inflammation and disease progression .
Stroke and Neurological Outcomes
AGR is also a valuable prognostic indicator in acute ischemic stroke. Higher AGR levels, especially when measured on day 7 after intravenous thrombolysis, are associated with better functional outcomes and lower risk of death or major disability. Lower AGR is independently linked to poorer prognosis in stroke patients . Large population studies confirm that higher AGR correlates with reduced stroke incidence, suggesting its utility in risk assessment .
Cancer Prognosis
In cancer, particularly esophageal cancer, a lower AGR is linked to worse prognosis and higher rates of postoperative complications. AGR reflects both the inflammatory response and nutritional status, serving as a predictor for patient outcomes after surgery .
Hospitalized Patients and General Prognosis
Among hospitalized patients, a low AGR is associated with a higher risk of adverse clinical outcomes, including longer hospital stays, sepsis, and mortality. Maintaining AGR above a certain threshold may help predict and potentially improve patient outcomes .
Cognitive Function in Older Adults
Research in older adults shows a positive, non-linear association between AGR and cognitive function. Higher AGR is linked to better cognitive performance, suggesting that maintaining an appropriate AGR may help limit cognitive decline in aging populations .
Conclusion
The albumin to globulin ratio is a readily available, cost-effective biomarker with broad clinical applications. It is valuable for diagnosing and differentiating diseases such as multiple myeloma, infections, and inflammatory conditions, as well as predicting outcomes in stroke, cancer, and general hospital populations. AGR also correlates with cognitive function in older adults. Regular monitoring and interpretation of AGR can provide important insights into a patient’s health status and prognosis across a range of medical conditions Lv2025Yang2022Wang2023+7 MORE.
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Most relevant research papers on this topic
The Diagnostic and Differential Value of the Serum Albumin-to-Globulin Ratio in Multiple Myeloma.
The serum albumin-to-globulin ratio (AGR) has significant value in diagnosing multiple myeloma and distinguishing it from liver and kidney diseases, making its clinical use warranted.
Elevated Albumin to Globulin Ratio on Day 7 is Associated with Improved Function Outcomes in Acute Ischemic Stroke Patients with Intravenous Thrombolysis
A/G ratio is an important prognostic indicator for acute ischemic stroke outcomes and warrants dynamic monitoring.
C-reactive protein (CRP)/albumin-to-globulin ratio (AGR) is a valuable test for diagnosing periprosthetic joint infection: a single-center retrospective study
C-reactive protein (CRP)/albumin-to-globulin ratio (AGR) is a valuable test for diagnosing periprosthetic joint infection, while other novel biomarkers have limited diagnostic value.
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