Allergy, Orange Test
About Allergy, Orange Test
| Field | Value |
|---|---|
| Also Known As | Orange IgE Test, Orange Allergy IgE Blood Test, Citrus sinensis Allergy Test, Orange Specific IgE, f33 Orange Test |
| Sample Type | Serum (venous blood) |
| Fasting Required | No fasting required |
| Report Time | 3 days |
| Recommended For | All ages, both genders |
| Price | Starting at ₹1,400 |
What is an Allergy, Orange Test?
The Allergy, Orange test is a blood test that measures the level of specific IgE (Immunoglobulin E) antibodies your immune system produces in response to Orange proteins. When the body treats Orange as a threat, it releases these antibodies, which can trigger allergic symptoms. The test is also referred to as the Orange IgE Test or the f33 Orange Test. A small serum sample is collected from a vein in your arm and analysed in the laboratory.
What Does an Allergy, Orange Test Measure?
The Allergy, Orange test targets one specific component: Orange-specific IgE antibodies in the blood. The result indicates whether your immune system has been sensitised to Orange proteins.
| Parameter | What it Shows |
|---|---|
| Orange-specific IgE (kUA/L) | The level of IgE antibodies directed against Orange proteins |
| IgE Class (0 to 6) | A graded scale indicating the degree of sensitisation |
A higher IgE level suggests greater sensitisation, though it does not predict the severity of any future allergic reaction.
Why is an Allergy, Orange Test Done?
Doctors recommend the Allergy, Orange test when a person experiences unexplained symptoms after consuming Oranges or citrus-containing products. It helps confirm whether the immune system is reacting to Orange proteins.
Common Symptoms That May Require This Test
The following symptoms after eating Oranges or citrus products may prompt your doctor to order this test.
- Tingling, itching, or swelling of the lips, tongue, or throat
- Hives or skin rash
- Nausea, stomach pain, or diarrhoea
- Nasal congestion or breathing difficulties
- Swelling of the face
- Itching around the mouth
Conditions This Test Can Help Detect
This test can support the identification of several allergic conditions.
- IgE-mediated Orange allergy
- Oral allergy syndrome (OAS), causing tingling and itching of the mouth and throat
- Contact dermatitis triggered by citrus peel exposure
- Cross-reactive allergy involving citrus fruits and pollen
How to Prepare and What to Expect
No special preparation is needed for the Allergy, Orange test. The process is quick and straightforward.
Do You Need to Fast?
No. Fasting is not required before this test. You can eat and drink as normal before your appointment. IgE antibodies remain detectable in your blood regardless of whether you have recently eaten Oranges.
Practical Tips Before Your Test
Follow these simple steps to ensure a smooth sample collection.
- Drink plenty of water before your visit to make the blood draw easier
- Inform the phlebotomist about any medications you are currently taking, including antihistamines, as these may need to be disclosed to your doctor
- Do not stop any medication without your doctor's instruction
- Bring a detailed clinical history, including your symptoms, previous test results, and any relevant medical records, as this is required for the test
- Wear a short-sleeved or loose-fitting top for easy access to your arm
Step-by-Step Procedure
Here is what to expect during the Allergy, Orange test procedure.
- A trained phlebotomist locates a suitable vein, usually in your forearm or the crook of your elbow.
- A tourniquet (elastic band) is placed on your upper arm; you may be asked to make a fist.
- The skin is cleaned with an antiseptic wipe, and a small needle is inserted. You may feel a brief sting.
- A small amount of blood (approximately 3 ml) is collected into a gel tube.
- The needle is removed, and a cotton swab or bandage is placed over the puncture site.
- The sample is stored at 2 to 8 degrees Celsius and dispatched to the laboratory for FEIA (Fluorescence Enzyme Immunoassay) analysis.
Factors That Can Affect Accuracy
Certain factors may influence the reliability of your results.
- Use of immunosuppressant medications, which may reduce IgE antibody production
- Concurrent parasitic infections, which can raise total IgE levels
- Improper sample handling or storage before analysis
- Timing of the sample relative to a recent allergic reaction
Understanding Your Allergy, Orange Test Results
Your doctor will review your results alongside your symptoms and medical history. The table below shows the standard IgE classification used to interpret this test.
| Class | IgE Level (kUA/L) | Interpretation |
|---|---|---|
| 0 | Less than 0.35 | Negative / Undetectable |
| 1 | 0.35 to 0.70 | Low (weak positive) |
| 2 | 0.70 to 3.5 | Moderate positive |
| 3 | 3.5 to 17.5 | High positive |
| 4 | 17.5 to 52.5 | Very high positive |
| 5 | 52.5 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
Some underlying conditions or sensitivities may affect how your results are interpreted.
- People with pollen allergy (pollinosis) may show positive IgE results to Orange due to cross-reactivity between citrus proteins and pollen proteins.
- A known cross-reaction also exists between Orange allergens and lipid transfer proteins found in Peach (Pru p 3).
- Grass pollen sensitisation may similarly produce cross-reactive responses to Oranges. Your doctor will account for these patterns when reviewing your results.
How to Maintain Healthy Levels
These general tips may be helpful if you are managing a known Orange sensitivity.
- Avoid Oranges and products containing Orange or citrus-derived ingredients if your doctor confirms a sensitivity
- Read food and beverage labels carefully, as citrus components can be present in processed products and dietary supplements
- Discuss with an allergist whether cooked citrus may be better tolerated, as heat can sometimes reduce allergenic proteins
Lupin Diagnostics Allergy, Orange Test Price and Home Collection
The Allergy, Orange test cost at Lupin Diagnostics starts at ₹1,400, and home collection is available for your convenience.
| City | Approximate Price (₹) |
|---|---|
| BHOPAL | 1400 |
| CHENNAI | 1400 |
| HYDERABAD | 1400 |
| KOLKATA | 1400 |
| NAVI MUMBAI | 1400 |
| PUNE | 1400 |
Prices are indicative and may vary by location. Please confirm the current price at the time of booking.
How to Book
Booking your Allergy, Orange test online with Lupin Diagnostics 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 the stipulated turnaround time.
Home Collection
The Allergy, Orange test home collection service is available across multiple cities. A certified phlebotomist will visit your home at the chosen time to collect your blood sample. All samples are processed in NABL-accredited laboratories, and your digital report is accessible via email or WhatsApp once ready.
Frequently Asked Questions
The Allergy, Orange test measures IgE antibodies in your blood that are directed specifically at Orange proteins. If your immune system has been sensitised to these proteins, it produces these antibodies when you consume Oranges. The test helps confirm whether your symptoms are linked to an Orange allergy.
No fasting is needed. You can eat and drink as usual before your appointment. There are no dietary restrictions for this test.
Yes. IgE antibodies remain present in your blood regardless of recent Orange consumption. You do not need to eat Oranges before the test for it to produce a valid result.
A positive result indicates sensitisation to Orange proteins, meaning your immune system has produced IgE antibodies against them. However, sensitisation does not always cause symptoms, and a higher IgE level does not necessarily indicate a more severe reaction. Your doctor will interpret the result in context with your symptoms.
Individual responses to citrus fruits vary. Cross-reactivity between Oranges and other citrus fruits or certain pollens is possible, but it does not affect everyone. Your doctor may recommend testing additional allergens if cross-reactivity is suspected.
Yes. The test is suitable for all ages and both genders. A small blood sample is collected in the same way for children as for adults. A parent or guardian should accompany children to the collection appointment.
Results for the Allergy, Orange test are typically available within 3 days of sample collection. Your report will be delivered digitally via email or WhatsApp.
Allergy, Orange Test
