Clinics, laboratory & costs
Every transfer of eggs, sperm or embryos between containers is checked by a second embryologist or an electronic witnessing system. You will also be asked to confirm your identity repeatedly on treatment days — this is intentional.
Also known as: double witnessing, electronic witnessing
Related Canada guides
Sources
- Canadian Fertility and Andrology Society (CFAS)
Last reviewed: September 9, 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.