Serum/plasma mass concentration of albumin (total protein-related, measured via nephelometry)

What Albumin Does in Your Body

Albumin is one of the most abundant proteins in your blood. It plays a critical role in maintaining proper fluid balance by helping prevent fluids from leaking out of blood vessels into surrounding tissues. Albumin also transports hormones, fatty acids, and medications throughout your body. Additionally, it contributes to immune function by binding to pathogens and toxins.

Why Your Doctor Might Order This Test

Doctors order albumin tests to check for conditions affecting protein production, such as liver disease, kidney problems, or malnutrition. It can also help monitor treatment responses in patients with chronic illnesses.

Common Conditions Linked to Albumin Levels

Low albumin levels (hypoalbuminemia) may indicate liver disease, kidney failure, severe infections, or malnutrition. High levels are less common but can occur in dehydration or certain genetic disorders.

Sample Collection and Preparation

A blood sample is drawn from a vein, usually in your arm. The blood is then separated into serum (liquid part after clotting) or plasma (liquid part before clotting) for testing. This test does not require fasting.