lab metric
Total Protein
Table of contents
Total protein measures the combined amount of albumin and globulins circulating in your blood, giving a broad view of your nutrition, hydration, liver function, and immune activity. It is usually drawn as part of a comprehensive metabolic panel and is read alongside its individual components rather than on its own.
Group | Typical range | Units |
|---|---|---|
Adults | 6.0 to 8.3 | g/dL |
Ranges vary between labs, so compare to the range on your own lab report.
What total protein measures
Total protein is the sum of albumin and globulin in your serum. Albumin, made by the liver, keeps fluid inside your blood vessels and carries hormones and medications, while globulins include the antibodies and transport proteins tied to your immune system. Measuring both together gives a quick snapshot of your overall protein balance.
What high or low levels mean
A high total protein most often reflects dehydration, which concentrates your blood, but it can also point to chronic inflammation or infection that raises globulins. Less commonly, it signals a blood disorder such as multiple myeloma or another monoclonal gammopathy, which needs specific follow-up testing. A low total protein can accompany liver disease, since a damaged liver makes less albumin, or kidney disease that leaks protein into your urine. Malnutrition, malabsorption conditions like celiac disease, and severe burns can also lower your levels. Because the test is broad, one abnormal result rarely gives a diagnosis on its own. If your value sits outside the reference range, your clinician will usually check albumin, globulin, and the A/G ratio, and may repeat the test once you are well hydrated.
Total protein FAQ
What does it mean if your total protein is high?
A high result most often reflects dehydration, which concentrates your blood. Persistent elevation can suggest chronic inflammation, infection, or occasionally a bone marrow disorder, so your clinician may repeat the test and check your protein subtypes.
Should you fast before a total protein test?
Fasting is usually not required for total protein alone, but the test is often drawn within a comprehensive metabolic panel that may ask you to fast beforehand. Follow the specific instructions your lab or clinician gives you.
Can dehydration cause a falsely high total protein?
Yes. Dehydration reduces the water in your plasma and concentrates the proteins, which can push your reading above the reference range without any underlying disease. Rechecking after normal fluid intake often returns the value to normal.
Read alongside albumin, globulin, and the albumin/globulin ratio to see how the individual components shape your total.
Sources
UCSF Health, Total protein.
MedlinePlus, Total Protein and A/G Ratio.
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