Pigweed, Common

Casandra

Casandra Test Code LC42175Version 1 (DRAFT)

Performing Lab

Lab LabcorpLab Test ID 602484CPT Code 86003

Also known as: Amaranth, Rough Pigweed; Spiny Pigweed

Clinical Use

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Use

The Pigweed, Common allergy test measures the specific IgE antibodies against common pigweed, a type of weed that can cause allergic reactions such as hay fever or allergic rhinitis. This test is useful for identifying sensitivities to this particular allergen, allowing for targeted management and treatment of allergy symptoms. By detecting elevated levels of IgE antibodies, the test helps healthcare providers diagnose and assess the severity of the allergic response and guide patients in avoiding triggers or initiating appropriate therapies.

Special Instructions

For optimal validity of test results, it's important to properly prepare and package the sample. Ensure that the serum is collected according to the laboratory's guidelines using a red-top or gel-barrier tube. The serum should be stored at room temperature until it is transported, making sure to avoid multiple freeze-thaw cycles, which could compromise stability. Consideration of the patient's allergy history and symptoms is crucial when interpreting results. Additional allergy tests may be needed for a comprehensive analysis.

Limitations

This test specifically measures IgE antibodies against common pigweed and may not detect allergic responses to other weeds or allergens. Cross-reactivity with similar allergens can occur, potentially affecting the specificity of the results. External factors like sample handling errors and deviations from the protocol might impact the outcomes. Clinicians should use this test alongside a detailed clinical history and additional diagnostic tests for a comprehensive allergy evaluation. False positives or negatives can occur, necessitating corroborative tests for confirmation.

Test Details