Providing your order has not reached the fulfilment center, in preparation for shipping, you may add further items in the following way:Log into your account here, alternatively please go to KetoHC homepage and log in by clicking on the ‘Login’ option – this is located at the top right hand side of the web page.Once logged in, you will be presented with the option to ‘edit’ your order.The edit process works by cancelling your original order but will automatically populate your shopping cart with your original order.From here you may add or subtract items at will.The process is complete. We look forward to providing you with your KetoHC Ketone Meter.