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Haptoglobin test

Also called: Serum haptoglobin

Haptoglobin binds hemoglobin released from broken red blood cells. Low levels suggest red cells are breaking down (hemolysis).

SampleA small tube of blood from a vein in your arm
Fasting?Usually not needed
ResultsUsually within 1 to 2 days
Good to knowOne result rarely tells the whole story. Your provider looks at your results together with your symptoms, exam, and other tests.

What the test is

It's usually checked with LDH, bilirubin, and a reticulocyte count.

Why it's done

  • Possible hemolytic anemia

Getting ready and what happens

  • None.

How the test is done

  • A health worker cleans the skin, puts a band around your arm, and draws blood from a vein with a small needle. It takes a few minutes.

What the results mean

Low

Supports hemolysis; more tests find the cause.

Questions to ask your provider

  • What do my results mean for me?
  • Do I need to repeat this test or have other tests?

Risks

A blood draw is very safe. You may have slight pain or a small bruise where the needle went in.

Related conditions

Related tests

Sources

Last updated 2026-11-13.