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Lab test

Fructosamine Test

The Fructosamine test measures the concentration of fructosamine in a serum sample using spectrophotometry. Quest describes it as a marker used to monitor the degree of blood sugar control over a shorter time frame than longer-term glucose markers.

Quest patient service center

About this test

Fructosamine forms when sugar binds to proteins in the blood, and its level reflects average blood sugar over a more recent window than longer-term markers do. Quest lists this assay as used specifically for monitoring the degree of glycemia over that shorter-to-intermediate time frame, rather than for a one-time diagnostic reading.

Who might consider this test?

  • Because the result reflects a shorter recent window, it is often reviewed together with other blood sugar markers a clinician is already following.

Test details

CollectionQuest patient service center

Quest resources

Additional details

This test isn't part of the Celio Health store at the moment, so it can't be ordered or requested here. The test menu lists everything that can.

Laboratory results should always be interpreted by a licensed clinician who knows your health history. This page is information about a test, not medical advice.

Frequently asked questions

What does the fructosamine test measure?

It measures the concentration of fructosamine in a serum sample using spectrophotometry.

How is the sample collected?

The test uses a serum sample from a routine blood draw.

Do I need to prepare for this test?

No preparation instructions are listed for this test, though people follow any instructions their ordering clinician provides.

How is a raised fructosamine level generally understood?

Quest notes a raised level is associated with prolonged elevated blood sugar, with higher values tracking poorer control; a clinician reads it together with other markers and a person's history.

Last updated 2026-09-18 · How we write about lab testing

Educational content

This page is for general educational purposes only. It is not medical advice, and it is not a substitute for consultation with a qualified healthcare professional. Laboratory results should always be interpreted by a licensed clinician who knows your health history. If you have questions about your health or your results, talk with your doctor. If you think you may be experiencing a medical emergency, call 911.