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Fructosamine (Serum)

Published: August 9, 2026Updated: August 16, 2026

This test measures the average blood sugar levels over the past two to three weeks by tracking glycated proteins, specifically albumin, in your serum. It provides insight into how well your blood sugar has been controlled during this period.

Quick summary

["Fructosamine helps assess long-term blood sugar management beyond just a single glucose reading."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
11904-0
Short code
GA from BPD.Hobbins83
Synonyms
GA from BPD.Hobbins83
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
us-estimated-from-bpd-hobbins
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

Why Is This Test Done?

Your healthcare provider may order a fructosamine test if you have diabetes or prediabetes and want to monitor how well your blood sugar has been controlled over time. It’s also useful for people with kidney disease or those who take certain medications that affect blood sugar levels.

How Is the Test Performed?

A small blood sample is taken from a vein in your arm. The sample is sent to a lab where it is analyzed using an immunoassay method to measure the glycated albumin levels.

What Do Results Mean?

Results are typically reported as a concentration value, but exact ranges can vary by lab. Higher levels may indicate poor blood sugar control, while lower levels might suggest better management. Your provider will interpret results in the context of your overall health and medical history.

What Are Possible Causes of Abnormal Results?

Elevated fructosamine levels can be due to prolonged high blood sugar, certain medications (like steroids), or conditions affecting protein metabolism. Lower levels may occur with low blood sugar or certain liver or kidney issues.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: Monitoring Diabetes and Glycemic Control

Short name

Fructosamine Level

Frequently asked questions

How often will I need this test?
The frequency depends on your health condition and treatment plan. For people with diabetes, it may be done every few months to track trends in blood sugar control. Your healthcare provider will determine the best schedule for you.
Can I eat or drink before this test?
No special preparation is usually needed. You can eat and drink normally before the blood draw, as fructosamine is measured in serum and does not require fasting.
Will the test hurt?
The blood draw may cause a slight sting or discomfort, but it typically lasts only a few seconds. Most people experience minimal pain afterward.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy