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Hemoglobin A1c (HbA1c) with Autoimmune Screening

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

This test measures your average blood sugar levels over the past 2–3 months and checks for certain autoimmune markers in your blood.

Quick summary

["Helps monitor diabetes and detect hidden autoimmune conditions."]

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

Key facts at a glance

LOINC
11271-4
Short code
Hct VFr BldCo Auto
Synonyms
Hct VFr BldCo Auto
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Ref low
36
Ref high
50
Critical range
18 N/A – 60 N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
automated-count
CPT
85014
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 Diabetes Management

HbA1c reflects your long-term blood sugar control, giving doctors a clearer picture than daily glucose checks alone. It’s a key tool for adjusting diabetes treatments and preventing complications like nerve damage or kidney issues.

Understanding Autoimmune Screening in This Test

The autoimmune portion of this test looks for markers that may indicate conditions like lupus, rheumatoid arthritis, or other autoimmune diseases, which can sometimes affect blood sugar control or mimic diabetes symptoms.

How the Test Works: Blood Sugar and Autoimmune Checks

Your blood is drawn to measure HbA1c (using an immunoassay method) and screened for specific proteins or antibodies that signal autoimmune activity. Results help doctors tailor both diabetes care and broader health strategies.

What to Expect Before the Test

No special preparation is needed, but fasting isn’t required for HbA1c. If autoimmune markers are flagged, your doctor may ask for additional tests to explore further.

Reference range

Adult males: 38-50%; Females: 36-44%N/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.

◆Associated findings1

Short name

HbA1c + Autoimmune Check

Frequently asked questions

HbA1c alone helps diagnose or monitor type 1 or type 2 diabetes, while autoimmune markers may reveal hidden conditions that could influence blood sugar levels or require additional treatment.
This test helps doctors assess whether your diabetes management needs adjustments, such as insulin doses or lifestyle changes, or if autoimmune treatment might be necessary.
How often should I get this test?
Typically, HbA1c is checked every 3–6 months for people with diabetes. Autoimmune screening may be included if symptoms suggest underlying conditions, but your doctor will determine the schedule.
What do abnormal autoimmune markers mean?
Abnormal markers don’t always mean you have an autoimmune disease, but they warrant further testing. Your doctor will discuss next steps, which may include blood tests, physical exams, or other evaluations.
  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