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Hemoglobin A1c (HbA1c) with Glycosylated Albumin Correction

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

This test measures the average blood sugar levels over the past 2–3 months by analyzing hemoglobin that has been chemically linked to glucose. The correction accounts for variations in albumin levels, which can affect standard HbA1c readings.

Quick summary

["Helps assess long-term blood sugar control with adjustments for protein levels in your blood."]

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

Key facts at a glance

LOINC
55870-0
Short code
HCG BldCo-aCnc
Synonyms
HCG BldCo-aCnc
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Ref low
0
Ref high
5
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
84702
SNOMED
275917004
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

Why This Test Matters

HbA1c is a key indicator of how well your body manages blood sugar over time, often used in diabetes monitoring. The glycosylated albumin correction ensures more accurate results, especially if your albumin levels are outside the typical range.

How the Test Works

Blood is drawn to collect a sample, which is then analyzed to measure the percentage of hemoglobin molecules bonded to glucose. Albumin levels are also checked to adjust the HbA1c value for precision.

What to Expect Before the Test

No special preparation is needed, but fasting is not required. Wear comfortable clothing and arrange for someone to drive you home if you’re taking certain medications that may affect blood sugar.

Possible Results and Interpretation

Results are reported as a percentage, reflecting your average blood sugar over months. A corrected HbA1c helps identify trends in diabetes management, particularly if your albumin levels fluctuate due to conditions like kidney disease or dehydration.

Reference range

Non-pregnant: <5 mIU/mLN/A

Specimen: whole-blood

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

Short name

HbA1c with Albumin Adjustment

Frequently asked questions

What does a high or low HbA1c with albumin correction mean?
A corrected HbA1c helps rule out false elevations or decreases caused by albumin changes. For example, low albumin (e.g., from kidney disease) may artificially raise HbA1c, while high albumin (e.g., dehydration) may lower it. This test supports more reliable long-term diabetes assessment.
How often should I get this test?
Your healthcare provider will determine frequency based on your diabetes management plan. Regular monitoring (e.g., every 3–6 months) is common for most patients, but adjustments may be needed if you have conditions affecting albumin levels.
Can diet or exercise affect this test?
Diet and exercise primarily influence short-term blood sugar levels, not the glycosylated albumin correction itself. However, they still impact your overall HbA1c reading, so consistent lifestyle habits support accurate results.
  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