Preservation of urine samples for assay of catecholamines and their metabolites.
D002395:Catecholamines / Q000652:urine*; D004492:Edetic Acid; D006801:Humans; D013048:Specimen Handling / Q000379:methods*; D013447:Sulfites
D002395:Catecholamines; D013447:Sulfites; C005200:sodium metabisulfite; D004492:Edetic Acid