Table 5.

IV Ammonia Scavenger Therapy Protocol

DeficiencyPatient WeightComponents of Infusion SolutionDosage ProvidedAdministration
Sodium phenylacetate& sodium benzoate 1, 2Arginine HCl injection, 10% 2Sodium phenyl-acetateSodium benzoateArginine HCl
CPS & OTC 0-20 kg 2.5 mL/kg2.0 mL/kg250 mg/kg250 mg/kg200 mg/kgLoading 3
Maintenance 4
ASS1 & ASL 2.5 mL/kg6.0 mL/kg250 mg/kg250 mg/kg600 mg/kg
CPS & OTC >20 kg 55 mL/m22.0 mL/kg5.5 g/m25.5 g/m24000 mg/m2
ASS1 & ASL 55 mL/m26.0 mL/kg5.5 g/m25.5 g/m212000 mg/m2
1.

Sodium phenylacetate/sodium benzoate must be diluted with sterile dextrose injection 10% before administration.

2.

Before dilution

3.

>90-120 minutes

4.

>24 hours; arginine infusion not to exceed 150 mg/kg/h

From: Urea Cycle Disorders Overview

Cover of GeneReviews®
GeneReviews® [Internet].
Adam MP, Feldman J, Mirzaa GM, et al., editors.
Seattle (WA): University of Washington, Seattle; 1993-2024.
Copyright © 1993-2024, University of Washington, Seattle. GeneReviews is a registered trademark of the University of Washington, Seattle. All rights reserved.

GeneReviews® chapters are owned by the University of Washington. Permission is hereby granted to reproduce, distribute, and translate copies of content materials for noncommercial research purposes only, provided that (i) credit for source (http://www.genereviews.org/) and copyright (© 1993-2024 University of Washington) are included with each copy; (ii) a link to the original material is provided whenever the material is published elsewhere on the Web; and (iii) reproducers, distributors, and/or translators comply with the GeneReviews® Copyright Notice and Usage Disclaimer. No further modifications are allowed. For clarity, excerpts of GeneReviews chapters for use in lab reports and clinic notes are a permitted use.

For more information, see the GeneReviews® Copyright Notice and Usage Disclaimer.

For questions regarding permissions or whether a specified use is allowed, contact: ude.wu@tssamda.

NCBI Bookshelf. A service of the National Library of Medicine, National Institutes of Health.