Answer
An unopened vial of Kadcyla (trastuzumab emtansine) powder for concentrate for solution for infusion has a shelf life of 4 years.
Sources for this answer
- Kadcyla 100 mg and 160 mg Powder for Concentrate for Solution for InfusionRoche Products Limited · emc · SmPC §6.3 Shelf life · Version 20Document updated
Sources checked