Wittmann, Gy Comparison of tetrahydrofuran and ethyl acetate as extraction solvents for urinary organic acid analysis. [electronic resource] - Journal of inherited metabolic disease Feb 2008 - 73-80 p. digital Publication Type: Comparative Study; Evaluation Study; Journal Article ISSN: 1573-2665 Standard No.: 10.1007/s10545-007-0767-8 doi Subjects--Topical Terms: Acetates--pharmacologyAcids--analysisAdultCarboxylic Acids--analysisFurans--pharmacologyHumansIons--analysisMetabolic Diseases--diagnosisOrganic Chemicals--analysisReproducibility of ResultsSensitivity and SpecificitySolvents--pharmacologyUrinalysis--methods