What Is an Albumin Test? The Albumin Test measures the amount of albumin, an essential protein that the liver produces. In the body, albumin plays a key role in maintaining fluid balance and transporting hormones, vitamins, and medications. As a result, abnormal albumin levels often signal underlying health problems. In particular, doctors associate these changes with issues related to the liver, kidneys, nutrition, or chronic disease. Why Do Doctors Recommend an Albumin Test? Doctors recommend...