What is the normal reference range for serum albumin?

What is the normal reference range for serum albumin?

• A. 3.5-5.0 g/dL
• B. 2.5-4.5 g/dL
• C. 4.0-6.0 g/dL
• D. 5.0-7.0 g/dL

Answer: (A)

Serum albumin is a liver-made protein that helps keep blood volume in check (oncotic pressure) and transports various substances. The normal reference range for albumin in healthy adults is about 3.5 to 5.0 g/dL. This range is what clinicians use to judge whether albumin levels are in a typical, healthy state. Values below 3.5 g/dL suggest hypoalbuminemia due to factors like malnutrition, liver disease, nephrotic loss, or inflammation. Values above 5 g/dL are uncommon in health and usually point to dehydration or lab variability, not a typical normal state. So 3.5–5.0 g/dL is the standard reference range.

Serum albumin is a liver-made protein that helps keep blood volume in check (oncotic pressure) and transports various substances. The normal reference range for albumin in healthy adults is about 3.5 to 5.0 g/dL. This range is what clinicians use to judge whether albumin levels are in a typical, healthy state. Values below 3.5 g/dL suggest hypoalbuminemia due to factors like malnutrition, liver disease, nephrotic loss, or inflammation. Values above 5 g/dL are uncommon in health and usually point to dehydration or lab variability, not a typical normal state. So 3.5–5.0 g/dL is the standard reference range.