False-positive Aspergillus antigenemia due to blood product conditioning fluids

Area of Science:

• Mycology
• Transfusion Medicine
• Immunology

Background:

• Blood transfusion safety is paramount, requiring rigorous screening for contaminants.
• Fungal contamination in blood products poses a significant risk to immunocompromised patients.
• Aspergillus species are common airborne fungi with potential clinical relevance.

Observation:

• The study investigated the presence of Aspergillus antigens in blood transfusion components.
• Galactomannans, a specific Aspergillus antigen, were analyzed across various blood products.
• Products from Fresenius Kabi blood bags were specifically examined.

Findings:

• Galactomannans were identified in transfused patients, pooled platelet concentrates, fresh frozen plasma, and packed red cells.
• The presence of galactomannans was exclusively linked to blood collection using Fresenius Kabi bags.
• Galactomannans were also detected in the anticoagulant and platelet additive solutions from this manufacturer.

Implications:

• This finding suggests a potential source of Aspergillus contamination related to specific blood collection materials.
• Further investigation into Fresenius Kabi blood bags and solutions is warranted to identify the contamination source.
• Enhanced quality control measures may be necessary for blood products associated with specific manufacturers.