Comparison of Galactomannan Enzyme Immunoassay Performance Levels when Testing Serum and Plasma Samples
Author(s) -
P. Lewis White,
Tim Jones,
Katie Whittle,
Joanne Watkins,
Rosemary A. Barnes
Publication year - 2013
Publication title -
clinical and vaccine immunology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.649
H-Index - 77
eISSN - 1556-6811
pISSN - 1556-679X
DOI - 10.1128/cvi.00730-12
Subject(s) - galactomannan , immunoassay , enzyme , chromatography , medicine , chemistry , immunology , antibody , biochemistry , aspergillosis
Diagnostic galactomannan (GM) enzyme immunoassay (EIA) testing is formally validated only for serum, though in practice, plasma is occasionally tested. It is assumed, but not confirmed, that results will be comparable to those for serum. GM EIA when testing plasma was evaluated, providing sensitivity (85.7%) and specificity (85.4%) comparable to those for serum. Plasma index values were higher than those for serum; if plasma GM EIA were used to define probable cases, four additional cases would have been diagnosed.
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