Allergen, Weed, Pigweed

Casandra

Casandra Test Code AR00324Version 1 (DRAFT)

Performing Lab

Lab ARUP LaboratoriesLab Test ID 0055025CPT Code 86003

Allergen, Weed, Pigweed

Also known as: PIG

Clinical Use

Order Test

Use

The Allergen, Weed, Pigweed test is used to detect the presence of allergen-specific IgE antibodies in the serum, specifically related to Pigweed allergens. The test helps in the diagnosis of allergic reactions and sensitivities associated with exposure to Pigweed, which may cause symptoms such as rhinitis, asthma, or skin reactions. Quantitative measurement of IgE levels assists in understanding the potential for IgE-mediated clinical reactions.

Special Instructions

Multiple patient encounters should be avoided. Serum should be separated from cells as soon as possible, ideally within two hours of collection. For multiple allergen orders, refer to the "Allergen Specimen Collection Instructions" on the ARUP website.

Limitations

The correlation of allergy laboratory results with clinical history and in vivo reactivity to specific allergens is crucial. Allergen results from 0.10-0.34 kU/L are particularly intended for specialist use due to undetermined clinical relevance. Despite the presence of allergen-specific IgE, results may not directly correspond to the severity of clinical symptoms or in vivo testing outcomes. A negative result does not necessarily exclude the presence of an allergy or the risk of anaphylaxis.

Test Details

New York Approved

Methodology

Immunoassay (Fluorescent Enzyme Immunoassay)

Biomarkers

Pigweed IgE

Analyte

IgE Level • Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)

LOINC Codes

Result Codes

7604-2

Result Turnaround Time

1-3 days

Specimen

Serum

Volume

0.5 mL

Minimum Volume

0.25 mL

Container

ARUP Standard Transport Tube

Collection Instructions

Collect serum separator tube. Separate serum from cells ASAP or within 2 hours of collection. Transfer 0.5 mL serum to an ARUP Standard Transport Tube.