It's #InternationalLeftHandersDay Remembering the time I was getting increasingly exasperated by each blood lancet I was trying to use being a dud. Then a colleague pointed out that because I was left-handed, it was activating every time I twisted the lid off. Tried right-handed: voilá. Bastards.
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Picture of a box of 'Unistik 3 Comfort' blood lancets, used to draw blood to check blood sugars.