Prealbumin Blood Test

Test Overview

This test measures the amount of prealbumin in the blood. Prealbumin is a protein that is made in the liver and released in the blood. It helps carry certain hormones that regulate the way the body uses energy and other substances through the blood.

When prealbumin levels are lower than normal, it may be a sign of a poor diet (malnutrition). Your doctor may use the results of this test to make changes in your diet. He or she also may use the results to see how well supplements or protein replacement fluids are working.

Other health problems also may cause your levels to drop. You may need another blood test to be sure that a poor diet is the reason for your low prealbumin levels.