Sample from the patient was submitted for investigation and a streptavidin interfering factor was found.Product labeling documents this interference: rare cases, interference due to extremely high titers of antibodies to analyte-specific antibodies, streptavidin or ruthenium can occur.These effects are minimized by suitable test design.For diagnostic purposes, the results should always be assessed in conjunction with the patient¿s medical history, clinical examination and other findings.A general product problem could be excluded.
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