Allergy, Green Bean Test: Booking, Price, and Results
About Allergy, Green Bean Test: Booking, Price, and Results
| Field | Value |
|---|---|
| Also Known As | Green Bean IgE Test, French Bean Allergy Test, f315 IgE Test, Green String Bean Allergy Test |
| Sample Type | Serum (venous blood) |
| Fasting Required | No fasting required |
| Report Time | 3 days |
| Recommended For | All ages; anyone with suspected green bean or legume allergy |
| Price | Starting at ₹1,300 |
What is an Allergy, Green Bean Test?
The Allergy, Green Bean test checks whether your immune system produces specific antibodies against green bean proteins. It measures a type of antibody called Immunoglobulin E (IgE) in your blood serum. Doctors prescribe this test when a patient shows signs of a possible food allergy to green beans. It is also known as the Green Bean IgE Test, the French Bean Allergy Test, or the f315 IgE Test.
What Does an Allergy, Green Bean Test Measure?
This test measures one key marker in your blood. The table below explains what it looks for and why it matters.
| Parameter | What it Measures |
|---|---|
| Green Bean-Specific IgE Antibodies | The amount of IgE antibody your immune system has produced in response to green bean proteins (Phaseolus vulgaris) |
When your immune system mistakenly identifies green bean proteins as harmful, it produces IgE antibodies. In healthy individuals, little to no green bean-specific IgE is present. Higher levels suggest that your immune system has become sensitised to this food.
Why is an Allergy, Green Bean Test Done?
Your doctor may recommend this test for several reasons, from investigating unexplained symptoms after eating green beans to confirming a suspected allergy before starting treatment.
Common Symptoms That May Require This Test
The following symptoms, particularly after eating green beans or legumes, may prompt a doctor to request this test:
- Skin rash, hives, or persistent itching
- Coughing or wheezing after eating
- A tight or swollen feeling in the throat
- Nausea, vomiting, or diarrhoea
- Stomach discomfort or bloating
- Dizziness or lightheadedness
- Swelling of the lips, face, or tongue
Conditions This Test Can Help Detect
A doctor may use the Green Bean IgE Test to assist with the following:
- Confirming a diagnosis of green bean or green string bean allergy
- Identifying which allergen is responsible for a patient's symptoms
- Investigating whether a severe allergic reaction (anaphylaxis) was triggered by green beans
- Confirming sensitisation before starting immunotherapy (an allergy desensitisation programme)
- Evaluating possible cross-reactivity with related legumes such as peas, lentils, peanuts, and chickpeas
How to Prepare and What to Expect
No special preparation is needed for the Allergy, Green Bean test procedure. However, a few simple steps will help ensure your visit goes smoothly.
Do You Need to Fast?
No, fasting is not required before this test. You can eat and drink as normal before your appointment. There are no dietary restrictions beforehand.
Practical Tips Before Your Test
Please keep the following mind before your sample is collected:
- Bring a detailed clinical history, including your symptoms, previous test results, and any relevant medical records, as this is required for the test
- Tell your doctor or phlebotomist about all medications you are currently taking, especially antihistamines (allergy medicines), as these may need to be paused before testing
- Do not stop any medication on your own unless your doctor specifically advises you to
- Stay well hydrated before the blood draw, as this makes veins easier to locate
- Let the phlebotomist know if you have a history of feeling faint during blood draws
Step-by-Step Procedure
Here is what to expect during sample collection:
- A trained phlebotomist (blood collection specialist) will clean the skin on your inner arm with an antiseptic wipe.
- A thin needle is used to draw a small amount of blood from a vein in your arm. The process takes less than a minute.
- The blood is collected into a yellow-top SST gel tube and labelled with your details.
- The sample is stored at the correct temperature (2 to 8 degrees Celsius) and sent to the laboratory.
- In the lab, the serum is tested using FEIA (Fluorescent Enzyme Immunoassay), a method that measures how much green bean-specific IgE is present.
- Your report will be ready within 3 days.
Factors That Can Affect Accuracy
Certain factors may influence your test result. These include:
- Markedly elevated total IgE levels (above 2,500 kU/L), which may cause a false-positive result
- Smoking, which can raise overall IgE levels unrelated to food allergy
- A parasitic infection, which may also elevate IgE
- Recent exposure to green bean allergens
- Some individuals may have measurable IgE without experiencing any clinical allergy symptoms
Understanding Your Allergy, Green Bean Test Results
Your doctor will review your results alongside your symptoms and medical history. The table below shows how IgE levels are classified.
| Class | IgE Level (kU/L) | Interpretation |
|---|---|---|
| 0 | Less than 0.35 | Negative (no detectable sensitisation) |
| 1 | 0.35 to 0.70 | Low or weak positive |
| 2 | 0.70 to 3.50 | Moderate positive |
| 3 | 3.50 to 17.50 | High positive |
| 4 | 17.50 to 52.50 | Very high positive |
| 5 | 52.50 to 100 | Very high positive |
| 6 | Greater than 100 | Very high 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 situations can affect how your results should be read:Smoking and parasitic infections can raise overall IgE levels in the blood, which may influence your result. Around 50% to 60% of positive allergy blood test results do not correspond to a true clinical allergy, which is why results must always be assessed alongside your actual symptoms. Some research also suggests that certain green bean proteins behave differently when the food is raw versus cooked, which can affect how the immune system responds.
How to Maintain Healthy Levels
If you have been diagnosed with a green bean allergy, these general tips can help you manage your exposure:
- Avoid green beans and foods that contain them; check ingredient labels on mixed vegetable products carefully
- Speak with your doctor about whether testing for other legumes is appropriate, given the possibility of cross-reactivity
- Keep your healthcare provider informed about any new or changing symptoms after eating legume-based foods
Lupin Diagnostics Allergy, Green Bean Test Price and Home Collection
The Allergy, Green Bean test is available at Lupin Diagnostics starting at ₹1,300, with home sample collection available across cities. The table below shows indicative prices:
| City | Approximate Price (₹) |
|---|---|
| BHOPAL | 1300 |
| CHENNAI | 1300 |
| HYDERABAD | 1300 |
| KOLKATA | 1300 |
| NAVI MUMBAI | 1300 |
| PUNE | 1300 |
Prices are indicative and may vary by location. Please confirm the current price at the time of booking.
Home Collection
Allergy, Green Bean test home collection is available across cities through Lupin Diagnostics. A trained phlebotomist visits your home at your preferred time to collect the blood sample. All samples are processed in NABL-accredited laboratories, and your digital report is accessible via email or WhatsApp once ready.
How to Book
The Allergy, Green Bean test online booking process at Lupin Diagnostics 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.
Frequently Asked Questions
The Allergy, Green Bean test measures the level of specific IgE antibodies in your blood to determine whether your immune system is sensitised to green bean proteins. Doctors use it to investigate food allergy symptoms, identify the cause of allergic reactions, or confirm sensitisation before starting allergy treatment.
No fasting is required before this test. You can eat and drink normally on the day of your appointment. There are no dietary restrictions for this blood test.
Your report will be ready within 3 days of sample collection at Lupin Diagnostics. Once available, the report is sent to you digitally via email or WhatsApp.
A positive result means your blood contains detectable IgE antibodies specific to green bean proteins, which suggests sensitisation. However, a positive result alone does not confirm a clinical allergy. Your doctor will consider your symptoms, medical history, and other factors before making a diagnosis.
Green beans belong to the legume family, and some people with a green bean allergy may also react to other legumes such as peas, lentils, peanuts, or chickpeas. If cross-reactivity is suspected, your doctor may recommend additional allergen-specific IgE tests for related foods.
Yes, this is a blood test with no direct exposure to the allergen, so it carries no risk of triggering an allergic reaction. It is considered safe for both mother and baby. However, it is only ordered when a pregnant woman has symptoms suggesting a food allergy; it is not part of routine antenatal screening.
Yes, home collection is available. You can complete the Allergy, Green Bean test online booking through the Lupin Diagnostics website, select a convenient time slot, and a certified phlebotomist will visit your home to collect the sample.
Allergy, Green Bean Test: Booking, Price, and Results
