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In comparison to standard urine cultures, an abstract in the Annals of Clinical and Laboratory Sciences (May 1995) found that SMFT detected 92% of the samples with significant bacteriuria.
SMFT uses a small aliquot of uncentrifuged urine and an equivalent amount of fluorochrome solution (acridine orange in a sterile phosphate buffer solution) on a slide.
Although Lorincz is quick to agree that more research is needed to establish the usefulness of SMFT for screening urinary tract infections, he points out such testing is expensive.
SMFT is one of several techniques attempting to improve on the "gold standard" for diagnosing a urinary tract infection--the traditional Gram stain followed by a bacterial culture.
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