ALLERGY, LEMON (NEEMBU)

The Allergy, Lemon (Neembu) Test is a specialized blood test that measures specific Immunoglobulin E (IgE) antibodies against proteins present in lemon (Citrus limon). This test helps identify allergic sensitization to lemon and supports the diagnosis of citrus allergy, food hypersensitivity, and IgE-mediated allergic reactions.

Lemon, commonly known as Neembu, is widely used in beverages, salads, pickles, desserts, juices, and numerous food preparations. Although lemon is rich in vitamin C and antioxidants, some individuals may develop allergic reactions after consuming lemon or coming into contact with lemon peel, juice, or citrus products.

In susceptible individuals, the immune system mistakenly recognizes lemon proteins as harmful substances and produces specific IgE antibodies. Upon repeated exposure, histamine and inflammatory mediators are released, leading to allergic symptoms involving the skin, oral cavity, gastrointestinal tract, and respiratory system.

The Lemon (Neembu) Allergy Test helps healthcare providers determine whether lemon is responsible for allergic symptoms and assists in developing dietary modifications and allergy management strategies.

Benefits of the Test

• Detects lemon-specific IgE antibodies
• Helps diagnose citrus fruit allergy
• Supports evaluation of food hypersensitivity
• Assists in identifying dietary triggers
• Helps prevent allergic reactions
• Requires only a blood sample
• Supports personalized allergy management

Why Doctors Recommend This Test

Doctors may recommend this test for:

• Mouth or throat itching after consuming lemon
• Skin rash or hives following citrus intake
• Lip, tongue, or facial swelling
• Abdominal pain, nausea, vomiting, or diarrhea
• Wheezing or breathing difficulty
• Suspected citrus fruit allergy
• Recurrent unexplained food-related allergic reactions

Preparation Before Test

Sample Required

• Peripheral venous blood sample

Preparation Guidelines

• No fasting is required
• Antihistamines generally do not interfere with blood IgE testing
• Inform your physician about previous allergic reactions and dietary history
• Follow laboratory instructions before sample collection

Reporting Time

Results are generally available within 3–7 working days, depending on laboratory methodology.

Who Should Take This Test?

• Individuals experiencing symptoms after consuming lemons or citrus fruits
• Patients with suspected fruit allergy
• Children and adults with recurrent allergic reactions
• Individuals undergoing allergy evaluation
• Patients with unexplained food hypersensitivity

Clinical Significance

Elevated lemon-specific IgE levels may indicate:

• Lemon Allergy
• Citrus Fruit Allergy
• Food Hypersensitivity
• IgE-Mediated Food Allergy

Common symptoms may include:

• Mouth or throat itching
• Hives and skin rash
• Swelling of lips, tongue, or face
• Abdominal pain
• Nausea and vomiting
• Diarrhea
• Wheezing
• Shortness of breath
• Severe allergic reactions including anaphylaxis (rare)

The presence of lemon-specific IgE antibodies indicates sensitization and should always be interpreted together with clinical symptoms and dietary history.