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Fructosamine test

Also called: Glycated albumin

Fructosamine shows your average blood sugar over the past 2 to 3 weeks. It's used when A1C may not be accurate.

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

Useful in pregnancy, after blood loss, with some anemias, or with hemoglobin variants.

Why it's done

  • When A1C isn't reliable
  • Checking a recent change in treatment

Getting ready and what happens

  • No fasting is needed.

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

ResultTypical range for adults
FructosamineAbout 200 to 285 micromol/L without diabetes (labs vary)

Normal ranges vary from lab to lab and can differ by age, sex, and pregnancy. Your report lists your lab's own range next to each result. A result a little outside the range is often not a problem.

High

Suggests high average blood sugar in recent weeks.

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.