Allergen, Food, Egg Yolk

Casandra

Casandra Test Code AR67211Version 1 (DRAFT)

Performing Lab

Lab ARUP LaboratoriesLab Test ID 0055212CPT Code 86003

Allergen, Food, Egg Yolk

Also known as: EGG YOLK

Clinical Use

Order Test

Use

This test is used to measure IgE antibodies specific to egg yolk allergens in the patient's serum. Such measurement is vital to diagnose egg yolk-related allergies and assess the likelihood of an allergic reaction. The test aids as part of an allergy evaluation and should be considered alongside clinical history and other diagnostic tests like skin testing. Allergy laboratory results should correlate with clinical history and in vivo reactivity to specific allergens.

Special Instructions

Multiple patient encounters should be avoided when preparing for the test, as stated under patient preparation guidelines. Ensure serum separation from cells as soon as possible or within 2 hours of collection. The test reports the results in terms of kU/L, which helps understand the probability of an IgE-mediated clinical reaction. Please refer to 'Allergen Specimen Collection Instructions' for further guidance regarding multiple allergen orders.

Limitations

While the test provides quantitative results for egg yolk-specific IgE, these concentrations may not directly correlate with the degree of clinical response or skin test results. There could be instances where a negative result does not completely rule out clinical allergy or the risk of anaphylaxis. Results that fall into the range of 0.10-0.34 kU/L may not have clinical relevance determined and are intended for specialist use, necessitating careful consideration alongside clinical findings and history.

Test Details

FDA Approved