Detection and estimation of urinary substances using a portable ultraviolet lamp (black light) (III): Fluorescent substances in urinary sediments

Abstract

We have already reported 24 fluorescent substances that we identified in urinary supernatant. Some fluorescent crystals and stones (e.g., sodium urate, ammonium urate, and uric acid), and mucopolysaccharide-like substances, plant fibers, and pollen are present in urinary sediments. By fluorescence spectroscopy and thin-layer chromatography, we have additionally identified 4–7 fluorescent substances in butanol extract from sodium urate and uric acid crystals and stones. The fluorescent substances in the crystals and stones may be incorporated during the formation of the crystals and stones within the urinary tract.