How to Cite This Chapter: Don-Wauchope A, Chetty VT, Ivica J, Kavsak P, Khan WI, Lafreniere M, Nouri K, Solnica B. Anti-Xa Assay. McMaster Textbook of Internal Medicine. Kraków: Medycyna Praktyczna. https://empendium.com/mcmtextbook/chapter/B31.1269.3.7.198. Accessed April 26, 2024.
Last Updated: May 9, 2022
Last Reviewed: May 9, 2022
Chapter Information
McMaster Textbook of Internal Medicine Editorial Offices
Editorial Office (Canada)
Authors: Andrew Don-Wauchope, Vasudhevan T. Chetty, Joško Ivica, Peter Kavsak, Waliul I. Khan, Matthew Lafreniere, Kazem Nouri
Editorial Office (Poland)
Authors: Bogdan Solnica
For a brief introduction and guide to abbreviations, see Laboratory Tests: General Remarks.
Analyte [material]
Anti-Xa assay (heparin) [P]
Anti-Xa assay (low-molecular-weight heparin) [P]
Reference range, target level, or decision threshold
Anti-Xa assay (heparin):
Therapeutic use: 0.35-0.70 IU/mLHRI
Occasionally used for monitoring UFH.
Anti-Xa assay (low-molecular-weight heparin):
Therapeutic use: 0.5-1 IU/mLHRI
Monitored in certain settings, eg, in renal impairment.
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