GlobalRPh RX List - Glucarpidase (Voraxaze)
- Product / population
- VORAXAZE rescue for toxic methotrexate exposure with delayed clearance due to renal dysfunction; not routine renal prophylaxis.
- Renal measure
- Methotrexate level/clearance and renal dysfunction; no renal dose reduction recommended.
RX mirror: this is not independent corroboration of its underlying label. Check dated-label and formulation limitations.
No-adjustment and assay statements confirmed in turn997795view9. This is not the complete rescue algorithm.
Renal dosing, restrictions and evidence limits
For the specified methotrexate rescue indication, the source recommends a single 50 Units/kg IV dose over five minutes, without renal dose adjustment. Continue the accompanying hydration, urinary alkalinization and leucovorin rescue plan; separate leucovorin by at least two hours before or after glucarpidase. Methotrexate immunoassays may overestimate concentrations for 48 hours because of DAMPA interference; a chromatographic method is needed for reliable values in that period. Do not apply this rescue intervention to expected methotrexate clearance or use a laboratory artifact to invent a repeat dose.