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Hemoglobin A1c (HbA1c) with Electrophoresis

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

This test measures the percentage of hemoglobin variants, including Hemoglobin A1c, which reflects your average blood sugar levels over the past 2–3 months. It helps assess long-term diabetes control.

Quick summary

["Helps track how well your blood sugar is managed over time."]

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

Key facts at a glance

LOINC
5183-9
Short code
HAV Ab SerPl IA-aCnc
Synonyms
HAV Ab SerPl IA-aCnc
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
ia
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

What Does This Test Measure?

Hemoglobin A1c is a form of hemoglobin that attaches to excess glucose in your blood. This electrophoresis test separates different types of hemoglobin variants, including A1c, to provide a detailed profile of your red blood cell composition. While A1c is the primary focus, other variants may also be identified for further clinical evaluation.

Why Is This Test Important?

Measuring hemoglobin variants—including A1c—helps healthcare providers assess chronic blood sugar levels, especially in patients with diabetes or prediabetes. Variations in hemoglobin types may indicate underlying conditions like thalassemia or other inherited blood disorders.

How Is This Test Performed?

A small blood sample is drawn from your arm. The sample is processed to separate hemoglobin types using electrophoresis, a technique that sorts proteins based on size and charge. The results are analyzed to quantify each variant, including A1c.

What Are Common Results?

Results typically report the percentage of each hemoglobin type, including A1c. For example, a high A1c percentage (above reference range) suggests poor blood sugar control, while unusual variant levels may warrant further investigation.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

HbA1c Electrophoresis

Frequently asked questions

How often should I get this test?
This test is often recommended annually for people with diabetes to monitor long-term blood sugar control. If you have other conditions (like thalassemia), your doctor may recommend more frequent testing or additional follow-up.
What does an abnormal result mean?
An elevated A1c percentage (above typical reference ranges) suggests consistently high blood sugar levels, which may require adjustments to your diabetes management plan. Other hemoglobin variants may indicate inherited blood disorders that need medical evaluation.
Can lifestyle changes affect this test?
Yes, diet, exercise, and blood sugar management can influence A1c levels. Maintaining healthy habits may help improve your test results over time, but results from this electrophoresis test may also reflect broader hemoglobin composition changes unrelated to glucose alone.
  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