Organic Acids Screen, Urine
Method Description Describes how the test is performed and provides a method-specific reference
A urine volume corresponding to 0.25 mg of creatinine is acidified, then extracted with ethyl acetate. After separation and evaporation of the solvent phase, the dry residue is sialylated and analyzed by capillary gas chromatography-mass spectrometry. When indicated, oxidation of 2-keto acids is performed by reaction with hydroxylamine hydrate.(Sweetman L: Organic acid analysis. In Techniques in Diagnostic Human Biochemical Genetics. Edited by FA Hommes. Wiley-Liss, New York, 1991, pp 143-176; Hoffman GF, Feyh P: Organic acid analysis. In Physician's Guide to the Laboratory Diagnosis of Metabolic Diseases. Edited by N Blau, M Duran, ME Blaskovics KM Gibson. Berlin, NY, Springer, 2003, pp 27-44)
PDF Report Indicates whether the report includes an additional document with charts, images or other enriched information
Day(s) and Time(s) Test Performed Outlines the days and times the test is performed. This field reflects the day and time the sample must be in the testing laboratory to begin the testing process and includes any specimen preparation and processing time required before the test is performed. Some tests are listed as continuously performed, which means assays are performed several times during the day.
Monday through Friday; 7:30 a.m./Continuously