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Misleading test results are not just misinterpretation
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Different patterns of indirect immunofluorescence (IIF) in screening for two conditions are because of technical reasons and not necessarily interpretation errors, concludes a quality assessment study from Australia.
Eleven laboratories specialised in screening for antineutrophil cytoplasmic antibodies (ANCA) by IIF to confirm active Wegener’s granulomatosis or microscopic polyangiitis took part. …