Anti-Islet Cell Antibody
About Anti-Islet Cell Antibody
| Field | Value |
|---|---|
| Also Known As | ICA Test, Islet Cell Cytoplasmic Antibody, Anti-Pancreatic Islet Cell Antibody, Diabetes Autoantibody Test |
| Sample Type | Venous blood (serum) |
| Fasting Required | No fasting required |
| Report Time | 2 to 3 working days |
| Recommended For | All ages; commonly ordered for children, adolescents, and adults with suspected type 1 diabetes or at-risk family members |
| Price | Starting at ₹1,350 |
What Is an Anti-Islet Cell Antibody Test?
The anti-islet cell antibody test detects specific immune proteins in the blood that mistakenly attack the insulin-producing cells in the pancreas. Doctors order this test to investigate suspected autoimmune diabetes, particularly when they need to distinguish type 1 diabetes from other forms.
Also referred to as the ICA test or islet cell cytoplasmic antibody test, it uses a blood sample drawn from a vein.
What Does an Anti-Islet Cell Antibody Test Measure?
| Parameter | What It Indicates |
|---|---|
| Islet cell cytoplasmic autoantibodies | Presence of autoantibodies targeting the insulin-producing islet cells of the pancreas; used as part of a broader panel of diabetes autoantibody tests in clinical practice |
The other autoantibodies in this group include:
- Insulin autoantibodies (IAA)
- Glutamic acid decarboxylase autoantibodies (GADA)
- Insulinoma-associated-2 autoantibodies (IA-2A)
- Zinc transporter-8 autoantibodies (ZnT8A)
Why Is an Anti-Islet Cell Antibody Test Done?
Doctors request this test when they suspect autoimmune diabetes or want to clarify the type of diabetes a patient has.
Common Symptoms That May Require This Test
Several symptoms may prompt a doctor to order the anti-islet cell antibody test. These include:
- Excessive thirst (polydipsia) and frequent urination (polyuria)
- Unexplained weight loss over a short period
- Persistent fatigue without a clear cause
- Blurred vision
- Slow-healing cuts or wounds
- Diabetic ketoacidosis, a condition where the body breaks down fat for energy due to insufficient insulin
Conditions This Test Can Help Detect
The diabetes autoantibodies test can help identify several conditions, including:
- Type 1 Diabetes Mellitus (T1D): The presence of islet autoantibodies confirms an autoimmune cause
- Latent Autoimmune Diabetes in Adults (LADA), sometimes called Type 1.5 diabetes, shares features of both type 1 and type 2 diabetes
- Pre-diabetes risk: Autoantibody positivity can predict future development of type 1 diabetes in currently asymptomatic individuals
- Associated autoimmune conditions such as autoimmune thyroid disease, which is frequently observed in patients with type 1 diabetes
How to Prepare and What to Expect
No special preparation is needed for the islet cell cytoplasmic antibody test, but a few practical steps will help the process go smoothly.
Do You Need to Fast?
No, fasting is not required before the ICA test. You may eat and drink normally before your appointment. If your doctor has ordered additional tests alongside this one, check whether those tests have separate preparation requirements.
Practical Tips Before Your Test
Following a few simple steps before your appointment can help ensure a good quality sample:
- Drink adequate water before the blood draw to keep the veins accessible
- Continue all prescribed medications unless your doctor advises otherwise
- Inform the laboratory staff about any recent vaccinations or immune treatments
- Tell your doctor if you have a bleeding disorder or are taking blood-thinning medicines
- If insulin autoantibody testing is also requested, the sample should be collected before starting insulin therapy or within two weeks of beginning it
Step-by-Step Procedure
The blood collection process for the anti-islet cell antibody test is straightforward and takes only a few minutes:
- A trained phlebotomist (blood collection specialist) will ask you to be seated comfortably and will identify a suitable vein, usually on the inner elbow
- The area is cleaned with an antiseptic solution to prevent infection
- An elastic band is placed around the upper arm to make the vein more prominent
- A small blood sample is drawn into an appropriate collection tube
- The elastic band is removed, and a cotton swab is pressed gently over the puncture site
- The sample is carefully processed in the laboratory; serum is separated quickly to preserve sample quality before dispatch for analysis
Factors That Can Affect Accuracy
Several factors may influence the reliability of your results:
- Recent vaccinations or immune-modifying treatments
- Haemolysis (breakdown of red blood cells) in the sample during collection or transport
- Delayed serum separation after collection
- Timing of the sample relative to insulin therapy initiation
- Inter-laboratory variation, as this test can be technically complex to standardise
Understanding Your Anti-Islet Cell Antibody Results
Results from the ICA test must always be reviewed with a doctor who can place them in the context of your symptoms, medical history, and other investigations.
| Parameter | Normal Range | Unit |
|---|---|---|
| Islet Cell Antibody (Titre) | Less than 1:4 (no antibody detected) | Titre |
| Islet Cell Antibody (JDF Units) | Less than 5 JDF units | JDF Units |
Note: To convert a titre to JDF units, multiply the titre value by 5 (for example, a titre of 1:8 equals 40 JDF units). Reference ranges may differ between laboratories.
These ranges are general guidelines. Your doctor will interpret your results based on your age, health history, and other factors. Always consult a qualified healthcare professional for personalised medical advice.
Results During Special Conditions
The ICA test has some technical limitations that are worth being aware of. The indirect immunofluorescence method can yield variable results across laboratories, and international standardisation of this assay remains challenging. This is why doctors often order more than one autoantibody test at the same time.
Additionally, some people with confirmed type 1 diabetes do not show measurable islet autoantibodies at the time of diagnosis. These individuals are classified as having type 1b diabetes. A negative result alone does not rule out autoimmune diabetes.
How to Maintain Healthy Levels
No lifestyle measure can prevent autoimmune diabetes, but some general steps support metabolic health:
- Maintain a healthy weight through a balanced diet and regular physical activity
- If you have a family history of type 1 diabetes, speak to your doctor about appropriate screening
- Early detection through autoantibody testing can help prevent complications such as diabetic ketoacidosis at the time of diagnosis
Lupin Diagnostics Anti-Islet Cell Antibody Test Price and Home Collection
The anti-islet cell antibody test is available at Lupin Diagnostics with home sample collection across cities in India. The approximate starting price for this test is ₹1,350, with costs varying depending on the type of test and the laboratory.
| City | Approximate Price (₹) |
|---|---|
| Mumbai | ₹1,350 |
| Bangalore | ₹1,350 |
| Hyderabad | ₹1,350 |
| Pune | ₹1,350 |
| Chennai | ₹1,350 |
| Bhopal | ₹1,350 |
| Indore | ₹1,350 |
| Kolkata | ₹1,350 |
Prices are indicative and may vary by location. Please confirm the current price at the time of booking.
How to Book
- Select the test on the Lupin Diagnostics website
- Choose your city and preferred time slot
- Opt for home sample collection by a certified phlebotomist, or visit your nearest Lupin Diagnostics centre
- Receive your report via email or WhatsApp within the stipulated turnaround time
Home Collection
Home sample collection for the anti-islet cell antibody test is available across multiple cities in India. All samples are processed in NABL-accredited laboratories by trained technologists. Your digital report is delivered directly to your email or WhatsApp, so you can share it with your doctor without visiting a centre.
Frequently Asked Questions
The anti-islet cell antibody test detects antibodies that target the insulin-producing cells of the pancreas. It is primarily used to confirm or rule out type 1 diabetes, distinguish it from type 2 diabetes, and identify people who may be at risk of developing autoimmune diabetes in the future.
No fasting is needed before the ICA test. You can eat and drink as normal before your appointment. If your doctor has requested other tests at the same time, ask whether those require any preparation.
Yes, detection of islet cell autoantibodies can indicate future risk. Research shows risk remains low with one antibody but rises substantially with two or more, and increases further with three or more. Your doctor will advise on appropriate follow-up.
A positive result indicates that autoantibodies against pancreatic islet cells are present in the blood. This suggests autoimmune activity and is consistent with type 1 diabetes or LADA (Latent Autoimmune Diabetes in Adults). Your doctor will interpret the result alongside your symptoms and other test findings before reaching any conclusion.
Yes, this is possible. Some people with type 1 diabetes do not show detectable islet autoantibodies at the time of diagnosis. This is why the diabetes autoantibodies test is often ordered as part of a panel, with multiple antibody markers tested together for a fuller picture.
When investigating autoimmune diabetes, doctors usually request at least two antibody tests. The glutamic acid decarboxylase antibody (GADA) is commonly combined with one or more of the following: IA-2 autoantibody, insulin autoantibody, and zinc transporter-8 autoantibody. Together, these form a diabetes mellitus autoantibody panel that improves diagnostic accuracy.
Yes, the test is appropriate for all age groups. Islet cell autoantibodies can appear years before any symptoms develop, making this test particularly useful for children with a family history of type 1 diabetes. If a parent or sibling has type 1 diabetes, speak to your doctor about whether screening is advisable.
Anti-Islet Cell Antibody
