Hemoglobin with Fractional Glycation (HbA1c-like measurement)
This test measures how much of your hemoglobin has been exposed to sugar over time, reflecting long-term glucose levels.
["It helps assess average blood sugar control, similar to HbA1c but may include additional glycation fractions."]
Key facts at a glance
- LOINC
- 33593-5
- Short code
- Hgb G-Coush MFr Bld
- Synonyms
- Hgb G-Coush MFr Bld
- Category
- hematology
- Sample
- whole-blood
- Container
- Lavender-top (EDTA)
- Units
- N/A
- Ref low
- 12
- Ref high
- 17.5
- Critical range
- 7 N/A – 20 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 85018
- SNOMED
- 900000000000003004
- Specimen volume
- 3 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h
- Hemolysis max
- 0
- Lipemia max
- 0
- Icterus max
- 0
- TAT
- 4–24 hours
- Order
- routine
What This Test Measures
This test evaluates the proportion of hemoglobin molecules that have been chemically modified by sugar (glycation). Unlike standard HbA1c, it may break down glycation into different fractions, offering a broader picture of your blood sugar history.
Why It Matters for You
Measuring glycation fractions can help identify patterns of glucose exposure that standard HbA1c might miss, potentially improving management of conditions like diabetes or prediabetes.
How the Test Works
Blood is drawn and analyzed using a method that separates hemoglobin into glycated forms. The test quantifies these fractions, which correlate with how long your red blood cells have been exposed to elevated sugar levels.
Sample Preparation
This test uses whole blood collected in an anticoagulant tube. The sample is processed and analyzed within a few days of collection to ensure accuracy.
Reference range
Adult males: 13.5-17.5 g/dL; Females: 12.0-16.0 g/dLN/A
No special preparation usually required. Stay well hydrated. Inform your healthcare provider of all medications and supplements you are taking.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
While standard HbA1c is the gold standard for diabetes monitoring, this test may provide additional insights into glycation patterns that could influence long-term health outcomes, particularly in complex cases or research settings.
Short name
HbA1c-like Glycation Profile
Frequently asked questions
How is this different from a standard HbA1c test?
What does a high or low result mean?
Is this test covered by insurance?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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