I finger prick my fingers many times a day to test my blood glucose, aspirating blood from the veins, so I decided to use my finger pricker on it, and it worked. As the knuckle was bruised I wasn't sure if finger pricker went too deep, so the next time I got one I decided to use the Lancet on its own, with great effect.
I have to say "Don't try this at home" to cover myself. I do this whenever I get one of these. Being a Type 1 Diabetic having had the condition for around 36 years, I seem prone to these minor problems.
Despite taking insulin for 36 years I currently have none of the usual complications and have led a very active life and sometimes bonkers active life. I have never been hospitalised for my diabetes and in 35 years never had a hypo that I couldn't treat myself, using common sense.