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phenolsulfonphthalein |
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phenolsulfonphthalein [fē′nəlsul′fōnfthal′ē·in] a bright red water-soluble triphenylmethane dye used as an indicator at pH 7.7. Also called phenol red. See also cystochromoscopy. phenolsulfonphthalein an acid-base indicator dye; abbreviated PSP. phenolsulfonphthalein (PSP) clearance test after an injection of the dye, urine samples are collected at timed intervals and the amount of excreted dye is determined and plotted against time as an indicator of renal function, particularly renal blood flow, tubular excretion, and to some extent glomerular filtration. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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