Jaffe reaction - wikipedia Jaffe reaction Max Jaffe 25 July 1841 Grünberg, Silesia October 26, 1911 ( 1911 - 10 - 26 ) ( aged 70 ) Berlin, Germany Nationality German Alma mater University of Berlin Known for Jaffe reaction of creatinine and picric acid -- the oldest clinical methodology still in use. Scientific career Fields Biochemistry, Pathology, Pharmacology Institutions University of Königsberg The Jaffe reaction is a colorimetric method used in clinical chemistry to determine creatinine levels in blood and urine. In 1886, Max Jaffe ( 1841 -- 1911 ) wrote about its basic principles in the paper Über den Niederschlag, welchen Pikrinsäure in normalem Harn erzeugt und über eine neue Reaction des Kreatinins in which he described the properties of creatinine and picric acid in an alkaline solution. The color change that occurred was directly proportional to the concentration of creatinine, however he also noted that several other organic compounds induced similar reactions. In the early 20th century, Otto Folin adapted Jaffe 's research into a clinical procedure. The Jaffe reaction, despite its nonspecificity for creatinine, is still widely employed as the method of choice for creatinine testing due to its speed, adaptability in automated analysis, and cost - effectiveness, and is the oldest methodology continued to be used in the medical laboratory. It is this nonspecificity that has motivated the development of new reference methods for creatinine analysis into the 21st century. Contents 1 Max Jaffe 1.1 ``... eine neue Reaktion des Kreatinins '' 2 Clinical applications 2.1 Interfering chromogens 2.2 From Neubauer to SRM 967 3 Works 4 See also 5 References 6 Further reading Max Jaffe Max Jaffe was a distinguished 19th - century German biochemist, pathologist, pharmacologist, and professor. He was born on July 25, 1841, in what was formerly Grünberg, Silesia and is now Zielona Góra, Poland. While attending medical school at the University of Berlin, he studied under Ludwig Traube and Wilhelm Kühne. Afterward, he worked as an assistant in a medical clinic in Königsberg. There, he co-authored a paper on putrid sputum with Ernst Viktor von Leyden that led to the discovery of certain characteristic putrid processes in the lungs. After earning his degree in internal medicine, he served in the Franco - Prussian War and was decorated with the Iron Cross Second Class. The title of Extraordinary Professor of Medicinal Chemistry was awarded to him in 1872 and the following year he became the first Ordinary Professor of Pharmacology at the University of Königsberg. He was promoted to director of the Laboratory for Medical Chemistry and Experimental Pharmacology in 1878 and became a member of the Deutsche Akademie der Naturforscher Leopoldina in 1882. Aside from studying creatinine, he is also known for discovering urobilin and urobilinogen in urine and found that these compounds originated in bile. He died on October 26, 1911 in Berlin and is buried in the Weißensee Cemetery. ``... Eine neue reaktion des Kreatinins '' Creatinine was first synthesized in vitro by Ivan Horbaczewski in 1885. One year later, Jaffe 's research was published in the paper Über den Niederschlag, welchen Pikrinsäre in normalem Harn erzeugt und über eine neue Reaction des Kreatinins. Jaffe had noticed that, when mixed in a sodium hydroxide ( NaOH ) solution, picric acid and creatinine formed a reddish - orange color and needle - like crystal precipitate. By using zinc chloride in a process known as the Neubauer reaction, and then performing the Weyl 's test, a colorimetric reaction using sodium nitroprusside ( SNP ), he determined that the precipitated compound was a double salt of the solution. Although he found the amount of precipitate directly proportional to the creatinine concentration, he also noted that the reaction was highly nonspecific and could be observed with many other organic compounds. Clinical applications Blood sample information for creatinine assays based on the Jaffe reaction. Serum Plasma Non-interfering Anticoagulants Sodium heparin Potassium heparin Lithium heparin EDTA Interferents Hemolysis -- falsely increases result. Icteremia -- falsely decreases result. Lipemia -- falsely decreases result. Ammonium heparin -- falsely increases result. Non-specific chromogens such as protein, glucose, acetoacetate, ascorbic acid, cephalosporins, ammonium -- falsely increase results. Although Jaffe 's name is synonymous with clinical creatinine testing, his paper only described the principle behind what would later become the enduring method. It was Otto Folin ( 1867 -- 1934 ), a Harvard biochemist, who adapted Jaffe 's research -- abandoning the standard Neubauer reaction of the time -- and published several papers using the Jaffe reaction to analyze creatinine levels in both blood and urine. Folin began using the picric acid procedure in 1901 and included it in his 1916 Lab Manual of Biological Chemistry. During his career, Folin modified and improved several quantitative colorimetric procedures, the first of which was for creatinine. He took advantage of technology available at the time, using a Duboscq colorimeter for measurement precision, and is credited for introducing colorimetry into modern biochemical analysis. It should be noted that Folin 's research did not focus on creatinine as a renal function indicator. Since the precursors of creatinine are synthesized in the liver, at this point in history, creatinine was considered indicative of liver function. It was not until 1926 that Poul Kristian Brandt Rehberg suggested creatinine was a significant marker for renal function. Interfering chromogens The nonspecificity of Jaffe 's reaction causes falsely elevated creatinine results in the presence of protein, glucose, acetoacetate, ascorbic acid, guanidine, acetone, cephalosporins, aminoglycosides ( mainly streptomycin ), ketone bodies, α - keto acids, and other organic compounds. Ammonium is also an interferent ; if the sample is plasma, care needs to be taken that ammonium heparin has not been used as an anticoagulant. Nonspecificity is markedly decreased in urine samples since urine creatinine levels are much higher than blood and it generally does not contain significant levels of interfering chromogens. The Jaffe reaction 's nonspecificity remains an important issue. Diabetes patients are a high - risk population to develop chronic kidney disease ( CKD ) and, therefore, interferences from glucose and acetoacetate are of particular importance. Artifacts such as hemolysis, lipemia, and icteremia can also affect accuracy. Hemolysis releases Jaffe - reacting chromogens and therefore will falsely increase results. Lipemia and icteremia can inhibit optical readings and falsely decrease values. The procedure has been developed over time with the intention to minimize these interferents. From Neubauer to SRM 967 Before Jaffe, Neubauer described a similar precipitation reaction by mixing creatinine with zinc chloride ( ZnCl ) and performing a Weyl 's test -- the addition of SNP to NaOH and then incubating with acetic acid ( CH CO H ) to develop a color change. Until Folin developed Jaffe 's reaction into a clinical procedure, Neubauer 's method was how creatinine was measured. As Folin 's method evolved, various techniques were implemented to remove Jaffe - reacting substances, mostly protein, from the sample and increase specificity. By the 1950s, precipitated aluminum silicate, called Lloyd 's reagent, was being used to remove protein from serum, further improving accuracy. Fuller 's earth was also used for protein - binding, but the reference method until the 1980s was adsorption with Lloyd 's reagent. New concerns arose due to non-standardization of procedures ; different labs were reading results at different endpoints. This problem was resolved with the advent of automated analyzers in the 1960s and 1970s, which introduced a kinetic reading of results rather than a specific endpoint. Kinetic Jaffe methods involve mixing serum with alkaline picrate and reading the rate of change in absorption spectrophotometrically at 520 nm. This not only standardized the procedure, but also removed the need for sample deproteinization. It also introduced two new problems -- analyzers used an algorithmic compensation to correct for pseudochromogens, and calibrations were not yet standardized between instruments. The 1980s saw several new technologies that promised to change the way creatinine testing was done. Enzymatic and ion - exchange methods provided better accuracy but had other drawbacks. Enzymatic methods reduced some interferences but other new ones were discovered. High - performance liquid chromatography, HPLC, was more sensitive and specific, and had become the new reference method endorsed by the American Association for Clinical Chemistry. HPLC addressed the shortcomings of Jaffe - based methods, but was labor - intensive, expensive, and therefore impractical for routine analysis of the most frequently ordered renal analyte in medical labs. Simple, easily automated and cost - effective, Jaffe - based methods have persisted into the 21st century, despite their imperfections. By 2006, isotope dilution mass spectrometry ( IDMS ) became the reference method. To improve the accuracy in creatinine testing, new standards were developed by the National Institute of Standards and Technology ( NIST ). The College of American Pathologists ( CAP ) and the National Kidney Disease Education Program ( NKDEP ) collaborated with NIST to develop a new control reference called standard reference material 967 ( SRM 967 ). SRM 967 aims to standardize calibration of creatinine testing, including Jaffe methods. Use of both IDMS and SRM 967 are currently recommended by the National Institutes of Health. Works Über den Niederschlag, welchen Pikrinsäre in normalem Harn erzeugt und über eine neue Reaction des Kreatinins by Max Jaffe ( 1886 ) See also Creatinine -- the most commonly ordered clinical test to determine renal function. Otto Folin -- developed the Jaffe reaction into its clinical application. References ^ Jump up to : Ahmed, Nessar ( 2011 ). Clinical Biochemistry. New York : Oxford University Press. p. 72. ^ Jump up to : Taylor, E. Howard ( 1989 ). Clinical Chemistry. New York : John Wiley and Sons. pp. 4, 58 -- 62. Jump up ^ Pagel, J. ( 1901 ). Biographisches Lexikon hervorragender Ärzte des neunzehnten Jahrhunderts. Berlin : Urban & Schwarzenberg. p. 814. Retrieved October 19, 2012. ^ Jump up to : Delanghe, Joris R. and Marijn Speeckaert ( 2011 ). `` Creatinine determination according to Jaffe -- what does it stand for ? '' ( PDF ). Nephrology Dialysis Transplantation Plus ( 0 ) : 1 -- 4. Retrieved October 19, 2012. Jump up ^ Jaffe, M. ( 1886 ). `` Über den Niederschlag, welchen Pikrinsäre in normalem Harn erzeugt und über eine neue Reaction des Kreatinins ''. Zeitschrift für physiologische Chemie. 10 ( 5 ) : 391 -- 400. ^ Jump up to : Annino, Joseph S. ( 1956 ). Clinical chemistry, principles and procedures ( first ed. ). Boston : Little, Brown and Company. pp. 235 -- 241. ^ Jump up to : Greenwald, Isidore ( 1925 ). `` The chemistry of Jaffe 's reaction for creatinine II. The effect of substitution in the creatinine molecule and a possible formula for the red tautomer ''. Journal of the American Chemical Society. 47 ( 5 ) : 1443 -- 1448. doi : 10.1021 / ja01682a033. Jump up ^ Folin, Otto ; J.L. Morris ( 1914 ). `` On the determination of creatinine and creatine in urine ''. Journal of Biological Chemistry ( 17 ) : 469 -- 473. ^ Jump up to : Shaffer, Philip ( 1952 ). `` Otto Folin ( 1867 -- 1934 ) '' ( PDF ). Biographical Memoirs of the National Academy of Sciences. 27 : 47 -- 82. Retrieved October 20, 2012. Jump up ^ Folin, Otto ; H. Wu ( 1919 ). `` A System of Blood Analysis ''. Journal of Biological Chemistry. 38 ( 1 ) : 81 -- 110. Retrieved October 19, 2012. Jump up ^ Folin, Otto ( 1916 ). Lab Manual of Biological Chemistry. New York : D. Appleton and Co. pp. 171 -- 173. Jump up ^ Syal K, Banerjee D, Srinivasan A ( 2013a ). `` Creatinine Estimation and Interference ''. Indian Journal of Clinical Biochemistry. 28 : 210 -- 211. doi : 10.1007 / s12291 - 013 - 0299 - y. PMC 3613509. CS1 maint : Multiple names : authors list ( link ) Jump up ^ Syal K, Srinivasan A, Banerjee D ( 2013b ). `` Streptomycin interference in Jaffe reaction - possible false positive creatinine estimation in excessive dose exposure ''. Clin Biochem. 46 : 177 -- 179. doi : 10.1016 / j. clinbiochem. 2012.10. 031. CS1 maint : Multiple names : authors list ( link ) ^ Jump up to : Myers, Gary L. ; et al. ( 2006 ). `` Recommendations for Improving Serum Creatinine Measurement : A Report from the Laboratory Working Group of the National Kidney Disease Education Program '' ( PDF ). Clinical Chemistry. 52 ( 1 ) : 5 -- 18. doi : 10.1373 / clinchem. 2005.0525144. PMID 16332993. Retrieved October 22, 2012. Jump up ^ `` Lloyd reagent ''. mediLexicon. Retrieved October 22, 2012. ^ Jump up to : Bishop, Michael L. ( 1992 ). Clinical Chemistry : Principles and Correlations ( second ed. ). Philadelphia : J.B. Lippincott and Company. p. 441. ^ Jump up to : Mitchell, Robert J. ( 1973 ). `` Improved Method for Specific Determination of Creatinine in Serum and Urine '' ( PDF ). Clinical Chemistry. 19 ( 4 ) : 408 -- 410. Retrieved October 22, 2012. ^ Jump up to : `` New Reference Material for Diagnosing Kidney Disease ''. National Institute of Standards and Technology. Retrieved October 22, 2012. Jump up ^ `` Creatinine Standardization Recommendations ''. National Institutes of Health. Retrieved October 22, 2012. Further reading A System of Blood Analysis by Folin and Wu ( 1919 ) On the determination of creatinine and creatine in urine by Otto Folin ( 1914 ) Recommendations for Improving Serum Creatinine Measurement : A Report from the Laboratory Working Group of the National Kidney Disease Education Program by Gary L. Myers et al. ( 2006 ) `` Max Jaffé ( 1841 -- 1911 ) ''. Nature. 148 ( 3743 ) : 110. 1941. Bibcode : 1941Natur. 148T. 110... doi : 10.1038 / 148110d0. Retrieved from `` https://en.wikipedia.org/w/index.php?title=Jaffe_reaction&oldid=841508709 '' Categories : Biochemistry methods Biochemists Name reactions Hidden categories : CS1 maint : Multiple names : authors list Pages to import images to Wikidata Articles with hCards Talk Contents About Wikipedia تۆرکجه Edit links This page was last edited on 16 May 2018, at 08 : 25. Text is available under the Creative Commons Attribution - ShareAlike License ; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia ® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization. About Wikipedia

Question: the jaffee reaction is the basis for methods involving the quantitation of
Answer: creatinine levels in blood and urine