Hemoglobin A1c (HbA1c) Analysis (Qualitative or Quantitative)
This test measures the percentage of hemoglobin A1c in your blood, which reflects your average blood sugar levels over the past 2–3 months. It helps doctors assess long-term control of diabetes or prediabetes.
["HbA1c helps track how well your blood sugar is managed over time."]
Key facts at a glance
- LOINC
- 107286-7
- Short code
- HRD status analysis Tiss Ql
- Synonyms
- HRD status analysis Tiss Ql
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- molgen
- CPT
- 86038
- 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 HbA1c Measures
HbA1c is a form of hemoglobin (the protein in red blood cells that carries oxygen) that has been attached to sugar (glucose) from your blood. The test quantifies this attachment to estimate your average blood sugar levels over time. Unlike a single blood sugar reading, HbA1c provides a clearer picture of long-term glucose control.
Why It’s Used
Doctors use HbA1c to diagnose diabetes, monitor treatment effectiveness, and identify trends in blood sugar management. It’s particularly useful for people with type 1 or type 2 diabetes, as well as those at risk for prediabetes.
How It’s Done
A small blood sample is taken from your arm, usually during a routine visit to your healthcare provider. The sample is analyzed to determine the percentage of hemoglobin A1c in your blood.
What to Expect Before or After
No special preparation is needed for an HbA1c test. You may feel slight discomfort from the needle, but it’s a quick and painless procedure. Results are typically ready within a few days and can be discussed with your doctor during your next visit.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
HbA1c Test
Frequently asked questions
HbA1c is a key indicator of how well your body manages blood sugar. Levels above 6.5% may suggest diabetes, while levels between 5.7% and 6.4% indicate prediabetes. Lower levels (typically below 5.7%) are generally considered normal, but individual needs may vary based on health status and treatment goals.
If you have diabetes, your doctor may recommend HbA1c testing every 3 to 6 months to monitor your blood sugar control. Frequency can vary based on your specific health needs, treatment plan, and whether you have complications.
Yes, HbA1c levels can fluctuate due to changes in diet, activity level, medications, or underlying health conditions. Regular testing helps track these changes and adjust treatment as needed.
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