A serum albumin blood test measures the amount of this protein in the clear liquid portion of the blood. Albumin is a protein made by the liver. If the results indicate an abnormal amount of albumin, it may suggest a problem with the liver or kidneys. High albumin levels are usually the result of dehydration or severe diarrhea.
When is an albumin blood test needed?
An albumin blood test is a liver function test. You might need it, in addition to other blood tests or urinalysis (urine test), if you have symptoms of liver disease or kidney disease. Albumin levels can also indicate underlying nutritional deficits, especially decreased protein in your diet.
Symptoms of liver disease may include:
- Bruises.
- Dark urine.
- Fatigue.
- Jaundice (yellow skin or whites of the eyes).
- Loss of appetite.
- Stool changes, like pale-colored stool.
- Edema (swelling) in your belly or legs.
- Unexplained weight loss.
Symptoms of kidney disease may include:
- Appetite loss.
- Fatigue or trouble concentrating.
- Frequent urination, especially at night (nocturia).
- Itchy or dry skin.
- Muscle cramps or weakness.
- Nausea and vomiting.
- Swelling in your feet, ankles or face.
- Trouble sleeping.
- Urine changes, like bloody, foamy or dark urine.
