C ANCA (IFA)*

The term autoimmune diseases refers to a group of diseases affecting a variety of organs in the body, and giving rise to symptoms that present a challenge for early diagnosis. The C ANCA Test is one of the most important blood tests performed to detect several autoimmune disorders, especially ANCA (associated vasculitis diseases). Early diagnosis may result in timely treatment of the specified condition and thus safeguarding the organs, such as kidneys or lungs, from being damaged.

City Imaging offers accurate and dependable C ANCA testing services owing to state-of-the-art laboratory technology. The qualified specialists ensure proper and timely testing results so that the responsible physicians can make objective decisions regarding the condition of the patient. The C ANCA Test costs between INR 1600 and INR 4000.

What is the C ANCA Test?

The C ANCA test helps determine whether an individual has autoantibodies directed against some proteins within neutrophils, which are a class of white blood cells called leukocytes. Normally, these antibodies are believed to harm the tissues and cause vasculitis, which is inflammation of the blood vessels of small and medium diameter. Generally, the C ANCA test is ordered when an expert suspects that an individual may suffer from an autoimmune disease such as Granulomatosis with Polyangiitis earlier known as Wegener's Granulomatosis.

Why is the C ANCA Test important?

Those suffering from autoimmune vasculitis may do so in various parts of the body and if not treated accordingly, the situation may turn fatal. As early symptoms resemble those of many other prevalent diseases, it is not easy to diagnose this condition.

In this context, the C ANCA test allows physicians to:

• Detect autoimmune blood vessel inflammation
• Support the diagnosis of vasculitis
• Differentiate autoimmune disorders from infections
• Monitor disease activity
• Evaluate response to treatment
• Guide further diagnostic testing

What does C ANCA detect?

The C ANCA test aims to identify antibodies against Proteinase-3, which is an enzyme located in neutrophils. Presence of antibodies in a person's body can result in inflammation and affect the blood vessels.

While a positive test indicates an autoimmune disease, the test should be interpreted with clinical presentation, imaging studies, and lab tests.

What are the conditions associated with a Positive C ANCA Test?

The C ANCA test is most commonly associated with:

1. Granulomatosis with Polyangiitis

It commonly affects:

• Nose
• Sinuses
• Lungs
• Kidneys
• Eyes
• Skin
• Joints

2. ANCA-Associated Vasculitis

Other types of vasculitis may also require ANCA testing, although P-ANCA may be more commonly associated with some of these conditions.

3. Autoimmune Disorders

Occasionally, C ANCA antibodies may also appear in:

• Certain inflammatory diseases
• Rare autoimmune disorders
• Some chronic infections

What are the symptoms that may require a C ANCA Test?

A healthcare provider may recommend this test if you experience:

• Persistent sinus infections
• Frequent nosebleeds
• Chronic nasal congestion
• Unexplained fever
• Fatigue
• Joint pain
• Muscle pain
• Blood in urine
• Persistent cough
• Shortness of breath
• Coughing up blood
• Skin rashes
• Eye inflammation
• Unexplained kidney problems
• Weight loss

Who Should Get a C ANCA Test?

The test may be advised for individuals who:

• Have symptoms suggestive of autoimmune vasculitis
• Experience unexplained inflammation
• Have abnormal kidney function tests
• Show lung abnormalities on imaging
• Have recurrent sinus disease without clear infection
• Need monitoring after treatment for vasculitis
• Have previously tested positive for ANCA antibodies

How is the C ANCA Test performed?

The C ANCA test requires only a simple blood sample.

The procedure includes:

1. Cleaning the skin with an antiseptic.
2. Collecting blood from a vein in the arm.
3. Sending the sample to the laboratory.
4. Testing for C ANCA antibodies using specialised techniques such as indirect immunofluorescence and, when appropriate, PR3-specific immunoassays.

How to understand the Test Results?

Negative Result

Typically, a negative result indicates that the test was unable to identify C ANCA antibodies in the blood. A negative test result should not be considered as evidence that an autoimmune condition does not exist; for example, in some cases of a vasculitic disease, the patient might have negative results of the ANCA test.

Positive Result

A positive C ANCA result indicates the presence of C ANCA antibodies.

This may suggest:

• Granulomatosis with Polyangiitis
• ANCA-associated vasculitis
• Rare autoimmune conditions

What are the additional Tests along with the C ANCA Test?

Your doctor may recommend:

• P-ANCA Test
• PR3 Antibody Test
• MPO Antibody Test
• Complete Blood Count
• ESR
• CRP
• Kidney Function Tests
• Urine Analysis
• Chest X-ray
• CT Scan
• Kidney biopsy in selected cases

What are the limitations of the C ANCA Test?

Although highly useful, the C ANCA test has certain limitations.

A positive result alone cannot confirm disease because:

• Some healthy individuals may rarely have low antibody levels.
• Other autoimmune conditions can occasionally produce positive results.
• Certain infections may rarely cause false-positive findings.

What are the benefits of the C ANCA Test?

Some major advantages include:

• Simple blood test
• Early detection of autoimmune vasculitis
• Helps prevent organ damage
• Supports accurate diagnosis
• Assists in treatment planning
• Useful for disease monitoring
• Safe and minimally invasive
• Reliable when interpreted with clinical findings

Are there any risks?

The C ANCA blood test is considered very safe.

Minor side effects may include:

• Mild pain during needle insertion
• Small bruise
• Temporary soreness
• Rarely, slight dizziness

Why choose City Imaging for the C ANCA Test?

Our laboratory offers:

• Advanced diagnostic technology
• Experienced laboratory professionals
• Accurate and dependable results
• Hygienic sample collection
• Timely report delivery
• Affordable testing services
• Patient-focused care

What are the tips before your Blood Test?

To ensure a smooth testing experience:

• Drink enough water before sample collection.
• Wear loose-fitting clothing for easy access to your arm.
• Carry previous medical reports if available.
• Inform the laboratory about current medications.
• Follow your doctor's instructions regarding ongoing treatment.

How to book C ANCA test online at City Imaging?

You can book C ANCA test at City Imaging by going to their website and book test within no time. They also provide home collection booking and upload prescriptions on the website.

Which C ANCA test centre is near me?

The C ANCA test centre near you is City Imaging, which has world class medical equipment and renowned professionals which will listen to your each query carefully and provide better solutions to your medical problems. They do tests at affordable rates and give special discounts to the needy ones. This testing centre is recognised by government institutions such as by NABH and NABL and has long experience in diagnostic fields.

What is the price of C ANCA test in Delhi?

In Delhi, you can have a C ANCA done for between INR 1600-4000. Different diagnostic centres will be (due to cost) higher or lower based upon the facility's size and location and whether they are government or private.

Frequently Asked Questions (FAQs)

What purpose does the C ANCA Test serve?

The C ANCA Test is used to identify antibodies linked to the occurrence of autoimmune vasculitis, particularly Granulomatosis with Polyangiitis.

Should I refrain from eating before the C ANCA Test?

No, it is usually not necessary to abstain from eating, unless instructed by your doctor to prepare for other specific tests that do require fasting.

Can a positive C ANCA Test indicate vasculitis?

No, a positive C ANCA result shows evidence to support diagnosis, but doctors consider additional symptoms, as well as imaging and laboratory results in diagnosing this condition.

Is the C ANCA Test procedure painful?

The C ANCA Test procedure does not involve anything too painful; only a small blood sample is taken and this causes only a brief pin prick.

Can the C ANCA Test be performed again?

Yes. The test may be repeated during the follow ups of a patient with ANCA-associated vasculitis to check the level of disease activity and the effectiveness of treatment.