Information on the accessories needed for live blood analysis is available on the online training site, just before module 2 of the training manual.
Single-use sterile lancets, 28G 1.8mm. Unistik 3 by Owen Mumford is widely available. The depth cannot be adjusted on these units, but there are various standard depths available in the brand, ranging from Gentle (30G 1.5mm) to Extra (21G 2.0mm). We recommend Unistik 3 Comfort (28G 1.8mm), but you should choose the type that allows you to get blood samples easily, without needing to squeeze the finger.