Detection of para-aminosalicylic acid (PAS) in urine: a simple spot test.
A simple spot test for the detection of PAS in urine has been described and its sensitivity compared with that of other methods such as the Ehrlich's reagent and the ferric chloride tests. In patients receiving 4 g. PAS the three methods gave similar results in urine specimens collected within eight hours. The new test is an inexpensive micro method which can easily be performed on a large scale. There is no reaction with sulfonamide or salicylic acid derivatives.
D000447:Aldehydes; D000636:Aminosalicylic Acids / Q000652:urine*; D055598:Chemical Phenomena; D002621:Chemistry; D002712:Chlorides; D002840:Chromates; D002857:Chromium; D006801:Humans; D007501:Iron; D008722:Methods; D010087:Oxides
D000447:Aldehydes; D000636:Aminosalicylic Acids; D002712:Chlorides; D002840:Chromates; D010087:Oxides; D002857:Chromium; D007501:Iron