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Glycated Serum Albumin (Hemoglobin A1c Alternative, Serum)

Published: August 9, 2026Updated: August 17, 2026

This test measures the percentage of albumin in your blood that has been bonded to sugar (glycated), reflecting your blood sugar levels over the past 2–4 weeks.

Quick summary

["Helps track long-term blood sugar control, useful for diabetes management."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 17, 2026Editorial policy

Key facts at a glance

LOINC
106530-9
Short code
Albumin Glycated SerPl IA-sRto
Synonyms
Albumin Glycated SerPl IA-sRto
Category
glucose
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Ref low
3.5
Ref high
5
Critical range
3 N/A – 14 N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
ia
CPT
82040
SNOMED
22383007
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 You

Unlike Hemoglobin A1c, which measures sugar attached to red blood cells (lasting ~120 days), glycated albumin reflects recent blood sugar trends and is useful in conditions where red blood cell turnover is abnormal (e.g., hemolytic anemia). It’s also less affected by recent blood transfusions.

How It Works

Your blood sample is analyzed to detect albumin molecules linked to glucose through a chemical reaction. The test quantifies this bond to estimate average blood sugar exposure.

Sample Collection & Preparation

A simple blood draw from a vein (usually in your arm) provides the serum sample. No special preparation is needed, but fasting may not be required—this test measures recent trends, not immediate blood sugar levels.

What Results Mean

Higher glycated albumin levels suggest consistently elevated blood sugar, while lower levels indicate better control. Results are compared to your clinical goals (e.g., diabetes treatment targets), but reference ranges vary by lab and individual health.

Reference range

Adult: 3.5-5.0 g/dLN/A

Specimen: serum

Fasting for 8-12 hours required. Water is permitted. Avoid chewing gum and smoking before the test.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Glycated Albumin (Serum)

Frequently asked questions

Why might my doctor order this test?
Your doctor may recommend glycated albumin if you have diabetes, recent blood transfusions, or conditions affecting red blood cell lifespan (e.g., anemia). It’s also useful for monitoring in patients with short red blood cell turnover or those who can’t have Hemoglobin A1c tests.
What do abnormal results mean?
Elevated levels may signal poor blood sugar management and could prompt adjustments to medications, diet, or lifestyle. Lower-than-expected levels might indicate temporary fluctuations or lab-specific factors, but always discuss results with your provider.
How often should I get this test?
Frequency depends on your health plan. Typically, doctors may recommend it every 3–6 months for diabetes patients or those with specific conditions affecting red blood cells, but check with your provider for personalized guidance.
  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 17, 2026. · Read our editorial policy