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Clinical Chemistry, Vol 17, 954-955, Copyright © 1971 by the American Association for Clinical Chemistry
1 Biomedical Engineering and Instrumentation Branch,
Division of Research Services, and Clinical Pathology Department, Clinical Center, National Institutes of Health, Bethesda,
Md. 20014.
Sulfamic acid, in polyvinyl alcohol envelopes, makes a safe and convenient preservative for urine, 10 g/liter of urine being a satisfactory concentration. Of several chemical procedures for urine, this preservative altered the results only for steroids.
Submitted on December 28, 1970
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