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Hemoglobin A1c (HbA1c) with Glycated Albumin Ratio

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

This test measures the average blood sugar levels over the past 2–3 months by analyzing hemoglobin and albumin, which are proteins in your blood. It helps assess long-term glucose control, especially useful for people with diabetes or prediabetes.

Quick summary

["This test provides insight into how well your blood sugar has been managed over time, beyond just recent readings."]

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

Key facts at a glance

LOINC
10486-9
Short code
Hgb Ag Tiss Ql ImStn
Synonyms
Hgb Ag Tiss Ql ImStn
Category
hematology
Sample
serum
Container
Red-top tube (SST)
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
immune-stain
CPT
85018
SNOMED
900000000000003004
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 This Test Matters for Blood Sugar Control

HbA1c reflects your average blood sugar levels over months because hemoglobin naturally binds to glucose. This test is particularly valuable because it accounts for fluctuations in recent blood sugar that daily glucose measurements might miss. It’s a key tool for doctors to adjust diabetes treatments and monitor long-term health risks like nerve damage or kidney disease.

How the Test Works: Measuring Glycated Proteins

The test measures two key proteins in your blood: hemoglobin (which carries oxygen) and albumin (a protein produced by your liver). Both proteins can bind to glucose over time, forming glycated versions (HbA1c and glycated albumin). Advanced laboratory techniques separate and quantify these glycated proteins to calculate the ratio, which helps assess overall blood sugar control.

What to Expect Before the Test

No special preparation is needed for this test. It’s typically drawn from a simple blood sample, usually taken from your arm. If you’re taking insulin or other diabetes medications, let your healthcare provider know, as this may affect your results. If you have a blood sugar test scheduled soon, your provider may advise timing your tests to avoid overlap.

Common Causes of Abnormal Results

HbA1c results can be influenced by factors like recent illness, stress, or certain medications. For example, severe infections or dehydration can temporarily raise HbA1c levels, while some medications (like steroids) may lower it. If your results are unusually high or low, your doctor may review your medical history and other tests to understand the cause.

Reference range

Adult males: 13.5-17.5 g/dL; Females: 12.0-16.0 g/dLN/A

Specimen: serum

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.

Clinical Significance: When to Pay Attention to Results

Short name

HbA1c + Albumin Ratio

Frequently asked questions

How often should I get this test?
Healthcare providers typically recommend HbA1c testing every 3–6 months for people with diabetes to track progress with treatment. For those at high risk of diabetes (e.g., prediabetes or family history), testing may be advised annually or more frequently. Your doctor will tailor recommendations based on your health status and goals.
What does an abnormal HbA1c mean?
An HbA1c result above 6.5% is generally considered diagnostic for diabetes. Levels between 5.7% and 6.4% indicate prediabetes, which means your blood sugar is higher than normal but not yet diabetes. If your result is consistently outside these ranges, discuss it with your doctor to explore next steps, such as lifestyle changes or medication adjustments.
Can diet or exercise affect my HbA1c results?
Yes! Diet, exercise, and weight management can significantly impact your HbA1c levels. Eating a balanced diet rich in fiber and reducing added sugars, along with regular physical activity, can help lower your HbA1c over time. Small, sustainable changes often yield the best results, so work with your healthcare team to create a plan tailored to your needs.
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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