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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Oxybuprocaine induces a false-positive response in immunochromatographic SAS Adeno Test.

OBJECTIVE: To investigate whether a solution of oxybuprocaine hydrochloride, 0.4%, results in a false-positive response in an immunochromatographic SAS Adeno Test. DESIGN: Experimental study. CONTROLS: Physiologic saline and 2% lidocaine. TESTING: Each chemical (100 microl) was diluted in a transport medium. Five drops (200 microl) of the resultant solution were dispensed into the round sample well of a test device. Fifteen samples were tested in each group. MAIN OUTCOME MEASURES: Ten minutes after the start of the test, a colored line in the "specimen" portion of the test membrane was visually read as positive or negative by a masked technician. RESULTS: No positive reaction was observed in the control groups (physiologic saline and lidocaine). A false-positive reaction was observed in six samples (33.3%) in the oxybuprocaine group. The positive rate was significantly higher in the oxybuprocaine group compared with those in control groups (P = 0.0062, Fisher's extract probability test). CONCLUSIONS: Oxybuprocaine may induce a false-positive reaction in an immunochromatographic SAS Adeno Test. We recommend the use of lidocaine, instead of oxybuprocaine, for local anesthesia in taking eye swabs from patients with suspected adenovirus infection.[1]


  1. Oxybuprocaine induces a false-positive response in immunochromatographic SAS Adeno Test. Hoshino, T., Takanashi, T., Okada, M., Uchida, S. Ophthalmology (2002) [Pubmed]
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