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Insulin Receptor Antibody (Serum)

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

This test measures the presence of antibodies that may interfere with how insulin works in your body. It can help diagnose conditions like insulin resistance or autoimmune disorders affecting insulin signaling.

Quick summary

["This test helps check for rare autoimmune issues linked to insulin receptor dysfunction."]

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

Key facts at a glance

LOINC
109297-2
Short code
Insulin Recep Ab Msmt Ser
Synonyms
Insulin Recep Ab Msmt Ser
Category
coagulation
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Ref low
0.8
Ref high
1.2
Critical range
— – 5 N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
85610
SNOMED
396252006
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 Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms like unexplained insulin resistance, unexplained weight changes, or if you’re being evaluated for conditions like type 2 diabetes or autoimmune disorders that affect hormone function. It’s also sometimes used in research or specialized clinical settings.

What to Expect Before the Test

No special preparation is needed. You’ll typically provide a blood sample, usually drawn from a vein in your arm. If you’re on blood thinners, let your provider know before the test.

What the Results Mean

Positive results indicate the presence of antibodies that may block insulin’s normal function. The exact meaning depends on your symptoms and medical history. Your provider will discuss this with you.

Common Causes and Conditions

While rare, this test can be relevant in autoimmune diseases like insulin receptor antibody syndrome, which may cause insulin resistance or metabolic issues. It’s not a routine test for most people.

Reference range

INR: 0.8-1.2 (warfarin: 2.0-3.0)N/A

Specimen: serum

Inform your healthcare provider if you are taking blood thinners. No special preparation required.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Insulin receptor antibodies

Frequently asked questions

What does a positive result mean?
A positive result means your blood contains antibodies that may interfere with insulin’s normal job. This could indicate an autoimmune condition affecting how your body responds to insulin. Your provider will guide next steps, which may include more testing or lifestyle adjustments.
How often should I get this test?
This test is not typically routine. It’s usually ordered only if your healthcare provider suspects a specific condition related to insulin receptor dysfunction. Follow their advice on follow-up testing.
Can diet or exercise affect this test?
No, this test measures antibodies in your blood, not active insulin levels. Diet or exercise won’t directly impact this test result, but they can influence your overall health and symptoms related to insulin sensitivity.
  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