Peanut Allergy Test: Booking, Price, and Results
About Peanut Allergy Test: Booking, Price, and Results
| Field | Value |
|---|---|
| Also Known As | Peanut-Specific IgE Test, Peanut IgE Antibody Test, Arachis hypogaea IgE Test |
| Sample Type | Venous blood (serum) |
| Fasting Required | No fasting required |
| Report Time | 6 days |
| Recommended For | All ages, children and adults with suspected peanut allergy symptoms |
| Price | Starting at ₹1400 |
What Is a Peanut Allergy Test?
A peanut allergy test is a blood test that checks whether your immune system produces specific antibodies in response to peanut proteins. It is commonly ordered when a person shows symptoms after eating peanuts or peanut-containing foods. The test analyses a small sample of venous blood (serum) and is also known as the peanut-specific IgE test, peanut IgE antibody test or Arachis hypogaea IgE test.
What Does a Peanut Allergy Test Measure?
The peanut-specific IgE test detects immunoglobulin E (IgE) antibodies, which the immune system releases when it mistakenly treats peanut proteins as a threat. The following components are measured:
| Parameter | What It Tells You |
|---|---|
| Peanut-specific IgE antibodies | Overall level of IgE antibodies your immune system has produced against peanut proteins |
Why Is a Peanut Allergy Test Done?
A doctor may request a peanut allergy test for several reasons, from investigating unexplained allergic symptoms to confirming a suspected reaction.
Common Symptoms That May Require This Test
The following symptoms, particularly after eating peanuts or peanut products, may prompt a doctor to request this test:
- Hives (urticaria) or skin swelling (angioedema)
- Worsening of existing eczema
- Abdominal pain, vomiting, or diarrhoea
- Repetitive coughing, wheezing, or noisy breathing (stridor)
- Runny nose or itching after peanut exposure
- Nausea following meals containing peanuts
Conditions This Test Can Help Detect
The peanut IgE antibody test can help identify or rule out the following conditions:
- Peanut allergy, one of the most prevalent food allergies
- Peanut sensitisation, where IgE antibodies are present but no clear symptoms occur on exposure
- Risk of anaphylaxis, a severe systemic reaction affecting breathing and blood pressure
- Cross-reactivity with birch tree pollen, which can produce positive peanut IgE results in pollen-sensitised individuals
How to Prepare and What to Expect
No special preparation is needed before a peanut allergy test. The process is quick and straightforward.
Do You Need to Fast?
No fasting is required. You can eat and drink as normal before your appointment. If your doctor has also requested other tests alongside this one, check with them in advance, as those tests may have their own preparation requirements.
Practical Tips Before Your Test
A few simple steps can help make the process go smoothly:
- You do not need to stop antihistamines before this test, unlike a skin prick test
- Inform the doctor or technician about any recent allergic reactions you have had
- Mention all current medications during your appointment
- Wear clothing with loose or short sleeves to allow easy access to the arm
Step-by-Step Procedure
Here is what to expect during sample collection:
- A trained phlebotomist cleans a small area on your arm with an antiseptic wipe.
- A thin needle is gently inserted into a vein, usually in the crook of your elbow.
- A small amount of blood is drawn into a serum separator tube. The process typically takes under five minutes.
- The needle is removed, and a small bandage is applied to the site.
- The blood sample is labelled and packed carefully for transport.
- The sample is sent to the laboratory, where IgE levels are measured using a fluorescence-based method.
Factors That Can Affect Accuracy
Several factors may influence your test result. These include:
- Elevated total IgE levels can lead to false-positive results
- Very low total IgE levels, which can cause false-negative results
- Birch pollen sensitisation, which may produce a cross-reactive positive result
- Concurrent infections or inflammatory conditions
- Timing of the test relative to a recent allergic reaction
- Improper sample handling during collection or transport
Understanding Your Peanut Allergy Test Results
Results should always be reviewed alongside your symptoms and medical history. This table shows the interpretation of specific IgE (immunoglobulin E) test results based on antibody concentration levels:
| Class | IgE (kU/L) | Interpretation |
|---|---|---|
| 0 | < 0.10 | Negative |
| 0/1 | 0.10 – 0.34 | Borderline / Equivocal |
| 1 | 0.35 – 0.69 | Equivocal |
| 2 | 0.70 – 3.49 | Positive |
| 3 | 3.50 – 17.4 | Positive |
| 4 | 17.5 – 49.9 | Strongly positive |
| 5 | 50.0 – 99.9 | Strongly positive |
| 6 | ≥ 100 | Strongly positive |
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 conditions can affect how Arachis hypogaea IgE test results are interpreted. Your doctor will take these into account:
- Patients with atopic dermatitis (eczema) may have elevated total IgE, which can cause weakly positive results to multiple allergens, including peanut, due to non-specific binding.
- Birch pollen allergy may produce a false-positive result for peanut through cross-reactivity.
- Some patients with high peanut IgE levels show no reaction during an oral food challenge, possibly because their antibodies target a non-allergenic protein within the peanut extract.
How to Maintain Healthy Levels
If you have been sensitised or diagnosed with a peanut allergy, these general wellness habits can help reduce the risk of accidental exposure:
- Avoid peanuts and peanut-containing foods, including sauces, baked goods, and certain Asian dishes where peanuts may not be immediately obvious.
- Read ingredient labels carefully each time you purchase packaged food, as recipes and formulations can change.
- Discuss an emergency action plan with your doctor, particularly if your IgE levels indicate a higher risk of reaction.
Lupin Diagnostics Peanut Allergy Test Price and Home Collection
The peanut allergy test price starts at approximately ₹1400 at Lupin Diagnostics, with home sample collection available across cities. Here is a table showing indicative prices:
| City | Approximate Price (₹) |
|---|---|
| Mumbai | ₹1400 |
| Bengaluru | ₹1400 |
| Chennai | ₹1400 |
| Pune | ₹1400 |
| Hyderabad | ₹1400 |
| Kolkata | ₹1400 |
Prices are indicative and may vary by location. Please confirm the current price at the time of booking.
How to Book
Follow these steps to book your test:
- 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 peanut allergy test across multiple cities in India. All samples are processed in NABL-accredited laboratories staffed by qualified technologists. Your digital report is delivered directly to your email or WhatsApp once it's ready.
Frequently Asked Questions
A peanut allergy test measures the level of IgE antibodies in your blood that are directed specifically at peanut proteins. High levels of these antibodies, considered alongside your symptoms, can indicate an allergic response to peanuts. Your doctor uses this result together with your medical history to reach a diagnosis.
Yes, this is possible. A positive IgE result means your body is sensitised to peanut proteins, but sensitisation alone does not confirm a clinical allergy. For example, a birch pollen allergy can produce cross-reactive positive results. Your doctor will interpret the result alongside your symptoms and history before drawing any conclusions.
No. Unlike skin prick allergy tests, the peanut IgE blood test is not affected by antihistamine medication. You do not need to pause any antihistamines before giving your blood sample.
Sensitisation means IgE antibodies to peanut are present in your blood, but you may not experience symptoms when you eat peanuts. A clinical allergy is diagnosed only when there are both detectable IgE antibodies and symptoms upon exposure. Your doctor will consider both factors together when interpreting your peanut IgE test results.
Yes. The blood-based peanut allergy test is suitable for all ages, including young children. It is often preferred for children because it does not require stopping medications and can be done even when a child has a skin condition such as eczema or hives.
For most people, a peanut allergy persists throughout life. However, research suggests that around 20% of children naturally outgrow their peanut allergy over time. Whether or not this applies to your child can only be assessed by an allergy specialist.
Peanut Allergy Test: Booking, Price, and Results
