Albumin: About This Test

What is it?

This blood test measures the amount of albumin in your blood. Albumin is a protein that is made in the liver and released into the blood. It helps keep the blood from leaking out of blood vessels. Albumin also helps carry some medicines and other substances through the blood and is important for tissue growth and healing.

Why is this test done?

This test is used to:

• Check how well the liver and kidneys are working.
• Find out if your diet contains enough protein.
• Help find the cause of swelling.

How do you prepare for the test?

• In general, you don't need to prepare before having this test. Your doctor may give you some specific instructions.

How is the test done?

• A health professional takes a sample of your blood.

What do the results mean?

• Your results will include an explanation of what a "normal" result is. This is called a "reference range." It is just a guide. Your doctor will evaluate your results based on your health and other factors. This means that a value that falls outside the normal values listed may still be normal for you.
• Low albumin levels may be caused by such things as kidney disease, liver disease, or malnutrition.

How long does the test take?

The test will take a few minutes.

What happens after the test?

• You will probably be able to go home right away.
• You can go back to your usual activities right away.