Serum or Plasma Hemoglobin A1c Electrophoresis (Qualitative or Quantitative)
This test measures the percentage of hemoglobin variants, including Hemoglobin A1c, in your blood using electrophoresis. It helps assess long-term blood sugar control.
["This test helps doctors check how well your blood sugar has been managed over time."]
Key facts at a glance
- LOINC
- 20572-4
- Short code
- Hgb A MFr Bld Elph
- Synonyms
- Hgb A MFr Bld Elph
- 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
- Method
- electrophoresis
- 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
Electrophoresis separates hemoglobin types based on their electrical charge. Hemoglobin A1c (a form linked to chronic glucose levels) is often analyzed alongside other variants. This method may be used qualitatively (to detect presence) or quantitatively (to measure specific percentages).
Why It’s Done
Doctors may order this test if you have diabetes or prediabetes, or if you’re at risk for complications related to blood sugar control. It can also help monitor treatment effectiveness or screen for conditions like thalassemia or other hemoglobin disorders.
How It Works
A small blood sample is drawn, and the hemoglobin is separated into different types using an electric field. The results show the distribution of hemoglobin variants, including A1c, which reflects average blood sugar over the past 2–3 months.
What the Results Mean
Results may show elevated or reduced levels of specific hemoglobin types, which can indicate conditions like diabetes, hereditary blood disorders, or other metabolic issues. Exact interpretation depends on clinical context and your doctor’s guidance.
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.
◆Associated findings1
Short name
HbA1c Electrophoresis
Frequently asked questions
How long does it take to get results from this test?
Can this test replace a standard HbA1c measurement?
What if my results show unusual hemoglobin variants?
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