The practical value of an estimation of renal function by means of chemical tests has not as yet been definitely determined. Medical literature during the past decade has been replete with articles concerning this subject. With the advent of each of the various functional tests, it was believed that the means had been discovered whereby an exact estimate of renal function was possible. In 1909 the use of phenolsulphonephthalein as a renal functional test was advanced by Rowntree and Geraghty, who asserted that in its use many of the objectionable features of other tests had been overcome. Since then many articles have appeared, largely corroborative of the assertions of Rowntree and Geraghty. As a result, the general impression now in this country is that an estimation of renal function by means of chemical tests is necessary before any surgical procedure can safely be made in the urinary tract.
BRAASCH WF, THOMAS GJ. THE PRACTICAL VALUE OF CHEMICAL TESTS OF RENAL FUNCTION IN SURGICAL CONDITIONS OF THE URINARY TRACT. JAMA. 1915;LXIV(2):104–109. doi:10.1001/jama.1915.02570280010003
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