Overview: Cladosporium Herbarum IgG TestIntroduction: The Cladosporium Herbarum IgG Test detects IgG antibodies to Cladosporium herbarum, indicating mold exposure causing respiratory or allergic symptoms. Following 2023 AAAAI guidelines, it uses an immunoassay for high sensitivity, aiding in allergy screening. This test is critical for guiding diagnosis, treatment, and improving outcomes in immunology for patients with suspected mold allergies.
Other Names: Cladosporium IgG Assay, Mold Allergy Test.
FDA Status: Laboratory-developed test (LDT), meeting immunology standards for diagnostic accuracy.
Historical Milestone: Mold allergy testing began in the 1980s with allergen research. IgG-specific assays emerged in the 1990s, and by the 2000s, immunoassays improved detection accuracy.
Purpose: Diagnoses mold exposure, guides treatment, and monitors IgG levels in patients with respiratory or allergic symptoms.
Test Parameters: 1. Cladosporium Herbarum IgG
Pretest Condition: No fasting required. Collect serum or saliva at any time. Report symptoms like wheezing or rash, and list medications like antihistamines.
Specimen: 2-5 mL serum (SST) or 1-2 mL saliva (sterile container). Centrifuge serum within 1 hour. Transport in a biohazard bag within 8 hours.
Sample Stability at Room Temperature: 8 hours
Sample Stability at Refrigeration: 7 days
Sample Stability at Frozen: 6 months
Medical History: Document respiratory issues, rashes, or exposure to moldy environments. Include current medications, especially antihistamines or steroids.
Consent: Written consent required, detailing the tests purpose, diagnostic implications, and potential need for allergy treatment.
Procedural Considerations: Uses an immunoassay to measure Cladosporium herbarum IgG antibodies. Results are available in 1-2 days, enabling rapid clinical decisions.
Factors Affecting Result Accuracy: Immunosuppressants may suppress antibody levels. Hemolysis or improper storage can degrade samples.
Clinical Significance: Positive results confirm mold exposure, prompting environmental control or allergy treatment. Negative results may require IgE testing.
Specialist Consultation: Consult an allergist for result interpretation. A pulmonologist referral is advised for respiratory symptoms.
Additional Supporting Tests: Cladosporium IgE test, skin prick test, or lung function tests to confirm mold allergy or assess respiratory impact.
Test Limitations: False negatives may occur with low exposure. Results require clinical correlation with exposure history.
References: AAAAI Allergy Guidelines, 2023; Journal of Allergy and Clinical Immunology, Portnoy JM, 2022.
