Batch number

The batch or lot number identifies the production run of a medicine and appears on the carton and usually on the pen, vial or syringe. Recording it, along with the expiry date, means you can respond quickly if a recall is issued and helps your clinic investigate any unexpected problem with a dose.

Also known as: lot number, batch code

Last reviewed: 8 September 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.