ENA Quantitative Profile Test: Booking, Price, and Results
About ENA Quantitative Profile Test: Booking, Price, and Results
| Field | Value |
|---|---|
| Also Known As | ENA profile, Extractable nuclear antigen panel, Anti-ENA antibodies, Anti-RNP, Anti-SSA/Ro, Anti-SSB/La, Anti-Sm, Anti-Scl-70, Anti-Jo-1 |
| Sample Type | Venous blood (serum) |
| Fasting Required | No fasting required |
| Report Time | 5 days |
| Recommended For | Adults of any gender with suspected autoimmune disorders, typically following a positive ANA test |
| Price | Starting at ₹4,800 |
What is an ENA Quantitative Profile Test?
The ENA quantitative profile test is a blood test that identifies specific antibodies targeting proteins found inside your body's cells. These proteins are called extractable nuclear antigens because they can be separated from the cell nuclei. Doctors typically order this test after a positive ANA (antinuclear antibody) screening result, when autoimmune disease is suspected. The test is also referred to as the ENA Profile or Extractable Nuclear Antigen Panel.
What Does an ENA Quantitative Profile Test Measure?
The ENA quantitative profile test looks for seven distinct autoantibodies. Each one is associated with a different group of autoimmune conditions. Here is a summary of what each antibody indicates:
| Antibody | What it Signals |
|---|---|
| Anti-SSA/Ro | Linked to Sjögren's syndrome and systemic lupus erythematosus (SLE) |
| Anti-SSB/La | Associated with Sjögren's syndrome, a condition affecting moisture-producing glands |
| Anti-Sm (Smith) | Highly specific for SLE; considered a near-diagnostic marker for lupus |
| Anti-RNP | Elevated in mixed connective tissue disease (MCTD) and sometimes in SLE |
| Anti-Scl-70 | A specific marker for scleroderma, a condition causing skin and organ hardening |
| Anti-Jo-1 | Specific to polymyositis, an inflammatory muscle disease |
| Anti-Centromere (CENP-B) | Associated with CREST syndrome, a limited form of scleroderma |
Why is an ENA Quantitative Profile Test Done?
This test helps doctors narrow down the cause of symptoms when an autoimmune condition is suspected. It is often ordered after a positive ANA result to identify which specific disorder may be present.
Common Symptoms That May Require This Test
The following symptoms are among the most common reasons a doctor may request an ENA quantitative profile test:
- Persistent fatigue with no clear cause
- Joint pain and swelling
- Skin rashes, including those triggered by sunlight
- Dry eyes or a persistently dry mouth
- Muscle weakness
- Raynaud's phenomenon (colour changes in the fingers or toes in cold conditions)
- Unexplained fever or general feeling of being unwell
Conditions This Test Can Help Detect
This test can help identify several autoimmune and connective tissue disorders. These include:
- Systemic lupus erythematosus (SLE)
- Sjögren's syndrome
- Scleroderma (systemic sclerosis)
- Mixed connective tissue disease (MCTD)
- Polymyositis and dermatomyositis (inflammatory muscle diseases)
- Rheumatoid arthritis (in some cases)
- Overlap syndromes, where features of multiple autoimmune conditions are present together
ENA Quantitative Profile Test During Pregnancy
For pregnant women with a known lupus or Sjögren's syndrome diagnosis, this test carries particular importance. Antibodies such as anti-SSA/Ro and anti-SSB/La can cross the placenta and may contribute to a condition called neonatal lupus in the baby, including a risk of congenital heart block. Women who test positive for these antibodies during pregnancy require close foetal monitoring throughout their pregnancy.
ENA Quantitative Profile Test for Chronic Disease Monitoring
For patients already diagnosed with conditions such as SLE, Sjögren's syndrome, or polymyositis, the ENA quantitative profile test may be repeated periodically. Quantitative results help doctors track disease activity and assess whether treatment is working. Changes in antibody levels over time can indicate whether a condition is progressing or responding to therapy.
How to Prepare and What to Expect
No special preparation is required for the ENA quantitative profile test. However, a few practical steps will make the process straightforward.
Do You Need to Fast?
No. Fasting is not required before this test. You may eat and drink normally on the day of sample collection. If your doctor has ordered additional tests alongside this one, check whether those tests have their own fasting requirements.
Practical Tips Before Your Test
Keep the following in mind before your appointment:
- Bring a detailed clinical history, including your symptoms, previous test results, and family history, as this is required for the test.
- Inform your doctor about all medications you are currently taking, particularly immunosuppressive drugs, corticosteroids, blood pressure medicines, or anti-seizure medications, as these can affect results.
- Wear clothing with sleeves that can be easily rolled up for blood collection.
- Stay well hydrated before the test to make the blood draw easier.
Step-by-Step Procedure
Here is what to expect during sample collection:
- A trained phlebotomist (blood collection specialist) will seat you comfortably and ask you to extend your arm.
- The skin over the vein is cleaned with an antiseptic solution.
- A tourniquet is applied to the upper arm to make the vein more visible.
- A small blood sample of approximately 3 ml is drawn from a vein using a fine needle.
- Needle is removed, and light pressure is applied to the site. The sample is collected in a lavender-top EDTA tube.
- The sample is stored under refrigeration and dispatched to the laboratory for analysis using the Real Time PCR method.
Factors That Can Affect Accuracy
Several factors can influence the accuracy of your results:
- Immunosuppressive or corticosteroid medications, which may lower detectable antibody levels
- Certain blood pressure or anti-seizure medications, which can occasionally trigger autoantibody production
- Recent infections, which may temporarily alter immune activity
- Timing relative to a disease flare, as antibody levels may be higher during active disease
Understanding Your ENA Quantitative Profile Test Results
Your results should always be reviewed with your doctor, who will consider them alongside your symptoms and full medical history. A reference range is included in your report for context.
| Parameter | Normal Result | Unit |
|---|---|---|
| Anti-SSA/Ro | Negative (less than 1.0) | Antibody Index |
| Anti-SSB/La | Negative (less than 1.0) | Antibody Index |
| Anti-Sm | Negative (less than 1.0) | Antibody Index |
| Anti-RNP | Negative (less than 1.0) | Antibody Index |
| Anti-Scl-70 | Negative (less than 1.0) | Antibody Index |
| Anti-Jo-1 | Negative (less than 1.0) | Antibody Index |
| Anti-Centromere (CENP-B) | Negative (less than 1.0) | Antibody Index |
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 should be read:
Patients on immunosuppressive therapy may show lower antibody levels, which does not necessarily mean the underlying condition has resolved. Antibody levels may also fluctuate with disease activity, though once an autoantibody develops, it generally persists long-term. A negative result does not entirely rule out an autoimmune condition, as some disorders may not involve the antibodies covered by this panel.
How to Maintain Healthy Levels
While these antibodies cannot be eliminated through lifestyle changes alone, general wellness practices support overall immune health:
- Follow a balanced diet rich in vegetables, whole grains, and lean proteins to support your immune system.
- Manage stress through regular physical activity, adequate sleep, and relaxation techniques, as chronic stress may influence autoimmune disease activity.
- Attend all follow-up appointments and take any prescribed medications as directed by your doctor.
Lupin Diagnostics ENA Quantitative Profile Test Price and Home Collection
The ENA quantitative profile test is available at Lupin Diagnostics starting at ₹4,800, with home sample collection available across cities in India.
| City | Approximate Price (₹) |
|---|---|
| CHENNAI | 9800 |
| HYDERABAD | 9800 |
| KOLKATA | 9800 |
| NAVI MUMBAI | 9800 |
| PUNE | 9800 |
Prices are indicative and may vary by location. Please confirm the current price at the time of booking.
How to Book
Booking your ENA quantitative profile test online is straightforward:
- 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
Lupin Diagnostics offers home sample collection for the ENA quantitative profile test across multiple cities in India. All samples are processed in NABL-accredited laboratories by experienced professionals. Digital reports are delivered directly to you, making the ENA quantitative profile test home collection option convenient and accessible.
Frequently Asked Questions
The ANA (antinuclear antibody) test is a broad screening test that detects a wide range of autoantibodies. The ENA quantitative profile test is ordered after a positive ANA result to identify which specific autoantibodies are present. This helps doctors narrow down which autoimmune condition may be responsible for your symptoms.
No fasting is required. You can eat and drink as normal before the ENA quantitative profile test. However, let your doctor know about any medications you are taking, as some can affect the results.
Results for the ENA quantitative profile test are typically available within 5 days of sample collection. The exact time may vary slightly depending on the laboratory.
No single result on this panel confirms a specific disease on its own. Your doctor will interpret your results together with your symptoms, medical history, and other investigations before arriving at any diagnosis.
This test may be repeated if initial results are negative but symptoms persist, or if a new set of symptoms develops in someone already diagnosed with an autoimmune disorder. It is also used to monitor disease activity and treatment response over time.
Yes. Immunosuppressive drugs may lower detectable antibody levels. Certain blood pressure, heart, or anti-seizure medications can occasionally trigger autoantibody production. Always share a full list of your current medications with your doctor before the test.
Yes, particularly for women with lupus or Sjögren's syndrome. Anti-SSA/Ro and anti-SSB/La antibodies can cross the placenta and may affect the baby. Women who test positive for these antibodies during pregnancy require specialised foetal monitoring, so speak to your doctor if this applies to you.
ENA Quantitative Profile Test: Booking, Price, and Results
