Allergy, Red Kidney Bean: Booking, Price, and Results
About Allergy, Red Kidney Bean: Booking, Price, and Results
| Field | Value |
|---|---|
| Also Known As | Red kidney bean IgE test, rajma allergy test, kidney bean (red) IgE serum test, F287 IgE |
| Sample Type | Serum (venous blood) |
| Fasting Required | No fasting required |
| Report Time | 3 days |
| Recommended For | All ages, individuals with suspected allergic symptoms after consuming red kidney beans or legumes. |
| Price | Starting at ₹1,300 |
What Is an Allergy, Red Kidney Bean Test?
The allergy, red kidney bean test, measures the level of allergen-specific IgE (immunoglobulin E) antibodies in your blood. When someone is sensitive to red kidney bean proteins, their immune system produces these antibodies, which can trigger allergic symptoms. Also called the rajma allergy test or red kidney bean IgE test, it is typically prescribed when a doctor suspects a food allergy linked to red kidney beans or other legumes. A small blood sample drawn from a vein is all that is needed.
What Does an Allergy, Red Kidney Bean Test Measure?
The test detects and quantifies IgE antibodies that are specifically directed against proteins in red kidney beans. Here is what the result tells you.
| Component | What It Measures |
|---|---|
| Allergen-specific IgE antibodies | Whether your immune system has produced antibodies in response to red kidney bean proteins. |
| IgE class (0 to 6) | The level of sensitisation, from undetectable to very high. |
When these antibodies are present, they can trigger the release of chemicals such as histamine from immune cells, causing allergic symptoms ranging from mild to severe.
Why Is an Allergy, Red Kidney Bean Test Done?
Doctors order the allergy, red kidney bean test when a patient reports symptoms that appear after eating red kidney beans or legume-containing foods. It helps identify the source of a suspected allergic reaction.
Common Symptoms That May Require This Test
The following symptoms, when they occur after consuming red kidney beans, may prompt a doctor to order this test:
- Itching or tingling in the mouth and throat.
- Hives (raised, itchy welts on the skin)
- Nausea, stomach cramps, or vomiting
- Diarrhoea
- Nasal congestion or a runny nose.
- Wheezing or difficulty breathing
- In rare, severe cases, anaphylaxis (a serious, rapidly developing allergic reaction requiring immediate medical attention).
Conditions This Test Can Help Detect
This test can help identify the following conditions:
- Red kidney bean allergy, confirming the specific allergen responsible for symptoms.
- Cross-reactivity with other legumes, where proteins in different legumes trigger similar immune responses.
- General legume sensitisation, particularly in individuals already known to be allergic to soya beans or peanuts.
How to Prepare and What to Expect
The allergy, red kidney bean test procedure is straightforward and requires minimal preparation. Read the points below before your appointment.
Do You Need to Fast?
No, fasting is not required for this test. You can eat and drink normally before your sample is collected.
Practical Tips Before Your Test
Keep the following points in mind before your appointment:
- Bring a detailed clinical history, including your symptoms, any previous allergy tests, and your family history, as this is required for the test.
- Tell your doctor about all medications you are currently taking. Antihistamines, in particular, can affect IgE test results.
- Continue taking any other prescribed medications unless your doctor specifically advises otherwise.
- Stay well hydrated before the test, as this makes blood collection easier.
- Wear a short-sleeved or loose-fitting top for easy access to your arm.
Step-by-Step Procedure
Here is what happens during the allergy, red kidney bean test procedure.
- A trained phlebotomist or healthcare professional will clean a small area on your arm with an antiseptic wipe.
- A fine needle is inserted into a vein, usually in the crook of your elbow. You may feel a brief sting as it goes in.
- A small amount of blood (approximately 3 mL) is collected into a special gel tube.
- The needle is removed, and a small bandage is placed over the site. The entire process takes only a few minutes.
- The blood sample is allowed to separate into serum, which is then refrigerated and sent to the laboratory.
- The serum is tested using fluorescence enzyme immunoassay (FEIA), a method that detects and measures the specific IgE antibodies accurately.
Factors That Can Affect Accuracy
The following factors can influence the reliability of your results:
- Use of antihistamine medications before the test.
- Very high total IgE levels in the blood (above 2,500 kU/L), which can cause non-specific binding and false-positive readings.
- Recent or ongoing allergen exposure.
- Improper sample storage or delays in transport.
- Providing incomplete clinical history, which can affect result interpretation.
Understanding Your Allergy, Red Kidney Bean Test Results
Your results will be reported as an IgE level in kU/L along with a class from 0 to 6. Always review your results with your doctor, who will consider your symptoms and medical background alongside the numbers.
| Class | IgE level (kU/L) | Interpretation |
|---|---|---|
| 0 | Less than 0.35 | Negative (no significant sensitisation) |
| 1 | 0.35 to 0.69 | Low positive (low-level sensitisation) |
| 2 | 0.70 to 3.49 | Moderate positive |
| 3 | 3.50 to 17.49 | High positive |
| 4 | 17.50 to 49.99 | Very high positive |
| 5 | 50.00 to 99.99 | Very high positive |
| 6 | 100.00 or above | Very high positive |
A result at class 2 or above (0.70 kU/L or more) is flagged as abnormally high. A positive IgE result indicates sensitisation but does not automatically confirm a clinical allergy. Your doctor will interpret the level in context with your symptoms and history.
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.
How to Maintain Healthy Levels
The following general tips are relevant if you have a confirmed or suspected red kidney bean allergy:
- If an allergy is confirmed, the primary approach is to avoid red kidney beans and foods that contain them, such as certain curries, chilli dishes, and mixed salads.
- Read food ingredient labels carefully before purchasing packaged foods, as kidney beans can appear in products where you may not expect them.
- If you currently eat other legumes without any symptoms, continue to do so unless your allergy specialist advises otherwise.
Lupin Diagnostics Allergy, Red Kidney Bean Test Price and Home Collection
The allergy, red kidney bean test, is available at Lupin Diagnostics starting at ₹1,300, with home sample collection available in multiple cities across India.
| 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.
How to Book
Booking the allergy, red kidney bean test online is simple.
- 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 3 days.
Home Collection
The allergy, red kidney bean test home collection is available across cities, so a certified phlebotomist will visit your home at your chosen time to collect the blood sample. All samples are processed in NABL-accredited laboratories to ensure accurate, reliable results. Your digital report is accessible via email or WhatsApp once ready.
Frequently Asked Questions
This test checks whether your immune system produces IgE antibodies in response to proteins in red kidney beans. It helps doctors confirm or rule out a red kidney bean allergy when you report symptoms after eating beans or legume-containing foods.
The test involves a routine blood draw, which causes only a brief sting when the needle is inserted. The procedure takes just a few minutes and is generally well tolerated by adults and children alike.
Red kidney bean poisoning is caused by eating undercooked beans, which contain a natural toxin called lectin, and typically causes nausea, vomiting, and diarrhoea. Red kidney bean allergy is an immune response to bean proteins and can cause hives, itching, and breathing difficulties. They are separate conditions with different causes.
Not on its own. A positive IgE test indicates sensitisation, meaning your immune system has produced antibodies. However, sensitisation does not always lead to symptoms when you eat the food. Your doctor will combine the test result with your clinical history to reach a diagnosis.
Not necessarily. Cross-reactivity between legumes is possible but does not affect everyone. Your doctor may recommend testing for other legumes if there is a reason to suspect cross-reactivity. Do not eliminate other legumes from your diet unless advised by your allergy specialist.
IgE-mediated food allergy typically causes symptoms within minutes to two hours of eating the food. Common reactions include itching in the mouth, hives, nausea, and in rare cases, anaphylaxis. If you experience severe symptoms, seek medical attention promptly.
Allergy, Red Kidney Bean: Booking, Price, and Results
