False-positive Aspergillus galactomannan immunoassay in the glucose component of total parenteral nutrition products.
Microbiol Spectr
; 11(6): e0167323, 2023 Dec 12.
Article
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| MEDLINE
| ID: mdl-37800931
ABSTRACT
IMPORTANCE This manuscript describes an occurrence of false-positive GM tests in patients receiving TPN products from a manufacturer who had recently changed the supplier of the glucose component. We describe the clinical presentation of nine false-positive cases and the results of serologic and microbiological investigations of the TPN products suspected of contamination with GM. Attempts to detect GM in parenteral nutrition products were made since the detection of GM in sodium gluconate-containing solutions in 2007, but none of them identified the source of elevated GM indexes in TPN products. However, the present study demonstrated that the glucose component of the TPN products contained a high level of GM antigen, which caused false-positive GM assay results. The source of GM was glucoamylase, which was derived from A. niger in the manufacturing process. Physicians and clinical microbiology laboratories should be aware of this issue to improve interpretation and patient care.
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Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Aspergillus
/
Mananos
Límite:
Humans
Idioma:
En
Revista:
Microbiol Spectr
Año:
2023
Tipo del documento:
Article
País de afiliación:
Corea del Sur