Anti-Parietal Cell Antibody IFA Test
About Anti-Parietal Cell Antibody IFA Test
| Field | Value |
|---|---|
| Also Known As | APCA Test, Anti-Gastric Parietal Cell Antibody, Gastric Parietal Cell Antibody (GPCA), PCA Test, APCA IFA |
| Sample Type | Venous blood (serum) |
| Fasting Required | Overnight fasting preferred but not mandatory |
| Report Time | 2 to 8 days (varies by laboratory) |
| Recommended For | Adults of all ages, male and female; more commonly ordered for those over 60 years |
| Price | Starting at ₹1,600 |
What Is an Anti-Parietal Cell Antibody IFA Test?
The anti parietal cell antibody IFA test detects specific immune proteins (autoantibodies) that mistakenly attack the parietal cells lining the stomach. Parietal cells produce intrinsic factor, a substance essential for absorbing vitamin B12. A blood sample from a vein is used for this test. It is also called the APCA IFA test, parietal cell antibody IFA, or the gastric parietal cell antibody test.
What Does an Anti-Parietal Cell Antibody IFA Test Measure?
The anti-parietal cell antibody immunofluorescence assay looks for IgG antibodies that target a specific enzyme (the proton pump, or H+/K+ ATPase) found on parietal cells in the stomach wall. The table below shows how results are reported for this test.
| Parameter | Result Category | Value |
|---|---|---|
| Parietal Cell Antibody IgG | Negative | 20.0 units or below |
| Parietal Cell Antibody IgG | Equivocal (borderline) | 20.1 to 24.9 units |
| Parietal Cell Antibody IgG | Positive | 25.0 units or above |
When tested by the IFA method, results are also reported as a titre (dilution level): Negative, 1:20, or 1:80 and above.
Why Is an Anti Parietal Cell Antibody IFA Test Done?
Doctors order this test when there is a clinical reason to check for autoimmune activity affecting the stomach. Below are the key reasons this test is requested.
Common Symptoms That May Require This Test
- Persistent fatigue or unexplained weakness
- Pale or slightly yellowish skin
- Shortness of breath or dizziness
- Loss of appetite, bloating, or digestive discomfort
- Numbness or tingling in the hands and feet
- Difficulty with memory or concentration
- Burning sensation on the tongue or recurring mouth ulcers
Conditions This Test Can Help Detect
- Pernicious anaemia, an autoimmune condition that stops the body from absorbing vitamin B12
- Autoimmune gastritis, where the immune system damages the stomach lining over time
- Atrophic gastritis, a thinning of the stomach lining
- Gastric ulcers and iron deficiency anaemia associated with autoimmune stomach disease
- Thyroid disease and type 1 diabetes, which are sometimes linked to parietal cell antibodies
- Assessment of stomach cancer risk in certain individuals
Anti Parietal Cell Antibody IFA Test for Chronic Disease Monitoring
Because parietal cell antibodies can appear well before symptoms develop, this test acts as an early marker for autoimmune stomach disease. People with other autoimmune conditions, such as Hashimoto's thyroiditis or type 1 diabetes, are at a higher risk of gastric autoimmunity. The test may also be repeated over time in patients with confirmed autoimmune gastritis to track how the condition progresses.
How to Prepare and What to Expect
Getting this test done is straightforward. Here is what you need to know before and during the appointment.
Do You Need to Fast?
Overnight fasting is preferred before this test, though it is not strictly mandatory. Your doctor will advise based on your situation. If you are having other tests at the same time, fasting may be required for those.
Practical Tips Before Your Test
- Drink plenty of water before the blood draw to keep veins accessible
- Inform your doctor about any medications you take, especially proton pump inhibitors (PPIs) or histamine-2 blockers (H2RAs), as these can affect results
- Avoid alcohol for at least 24 hours before the test
- Wear a short-sleeved or loose-fitting top for easy access to your arm
Step-by-Step Procedure
- A trained phlebotomist ties an elastic band around your upper arm to make the veins more visible.
- You may be asked to clench your fist briefly to help fill the veins.
- The skin over the chosen vein is cleaned with an antiseptic wipe.
- A small needle is used to draw blood into a special collection tube (an SST tube).
- The band is removed, and gentle pressure is applied to the site, followed by a small bandage.
- The blood sample is processed in the lab using the Indirect Fluorescent Antibody (IFA) method with a mouse stomach-kidney substrate.
Factors That Can Affect Accuracy
- Severely fatty (lipaemic), jaundiced (icteric), or damaged (haemolysed) blood samples
- Medications such as PPIs that affect stomach function
- Immune complexes in the blood, which may occasionally cause false-positive readings
- Poor sample handling or storage between collection and testing
Understanding Your Anti Parietal Cell Antibody IFA Test Results
Your results need to be reviewed alongside your symptoms, health history, and any other tests your doctor has ordered. The table below outlines general result categories.
| Result | Meaning |
|---|---|
| Negative (at or below 20.0 units) | No detectable antibodies against parietal cells |
| Equivocal (20.1 to 24.9 units) | Borderline; a repeat test may be needed |
| Positive (25.0 units or above) | Antibodies detected; further evaluation required |
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
Certain circumstances can affect how results are interpreted: The likelihood of a positive result increases with age, reflecting the higher rate of atrophic gastritis in older adults. Parietal cell antibodies may also appear in unaffected family members of people with pernicious anaemia and in patients with autoimmune thyroiditis (36 to 44% of patients with autoimmune gastritis also have thyroid autoimmunity). Among people with type 1 diabetes, the risk of a positive result is 3 to 5 times higher than in the general population. A negative result does not entirely rule out parietal cell-related conditions, as antibody levels may be too low to detect.
How to Maintain Healthy Levels
These general wellness tips may support your overall stomach and nutritional health:
- Include vitamin B12-rich foods such as meat, fish, eggs, and dairy in your diet; if you are vegetarian or vegan, discuss supplementation with your doctor
- Attend regular check-ups if you have other autoimmune conditions or a family history of pernicious anaemia
- Report any new or worsening digestive symptoms to your doctor early
Lupin Diagnostics Anti-Parietal Cell Antibody IFA Test Price and Home Collection
The anti-parietal cell antibody IFA test price starts at approximately ₹1,350, with home collection available across cities. The table below shows indicative prices across major Indian cities.
| City | Approximate Price (₹) |
|---|---|
| Mumbai | ₹1,350 |
| Bangalore | ₹1,350 |
| Chennai | ₹1,350 |
| Hyderabad | ₹1,350 |
| Pune | ₹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 or app.
- 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
Lupin Diagnostics offers home sample collection for the anti-parietal cell antibody immunofluorescence assay across multiple cities in India. All samples are processed in NABL-accredited laboratories by qualified professionals. Your digital report is sent directly to your email or WhatsApp once ready.
Frequently Asked Questions
This test helps doctors evaluate patients who may have pernicious anaemia or an immune-related deficiency of vitamin B12. It looks for autoantibodies that attack the stomach cells responsible for producing intrinsic factor, a protein needed for B12 absorption. The test is also used to investigate autoimmune gastritis and related conditions.
Overnight fasting is preferred but not strictly required. Your doctor will advise you based on your specific situation. If other tests are being done at the same time, fasting requirements may differ.
A positive result means that IgG antibodies against parietal cells were found in your blood. This may suggest autoimmune gastritis or an increased risk of pernicious anaemia. Your doctor will recommend further tests and evaluation before any diagnosis is made.
No, this test alone is not enough to confirm pernicious anaemia. It is typically used alongside other tests, such as vitamin B12 levels and an intrinsic factor antibody test, to build a more complete picture for your doctor.
Yes, parietal cell antibodies can occasionally be detected in healthy individuals, particularly those over 60 years of age. Their presence does not always lead to disease. Your doctor will consider the result alongside your symptoms and overall health.
An equivocal result is inconclusive, meaning the antibody level falls in a borderline zone. If your doctor has a strong clinical reason to suspect pernicious anaemia, they may recommend repeating the APCA test after 4 to 6 weeks.
Yes, if you are searching for an anti parietal cell antibody IFA test near me, Lupin Diagnostics offers home collection across major Indian cities. A trained phlebotomist visits your home at your chosen time, and your results are delivered digitally once available.
Anti-Parietal Cell Antibody IFA Test
