The application concerns a sampling device (12) and a system (10) for collecting body fluid, comprising a metal lancing unit (14) having a distal tip (40) suitable for piercing skin and a capillary channel (42) extending between the tip (40) and a proximal section of the lancing unit (14) for collecting body fluid； and further comprising a plastic holding unit (16) affixed to the lancing unit (14) for manipulating the lancing unit (14) in order to form an incision in the skin, wherein the holding unit (16) contains a sorbent (38) adapted for sorption of moisture and/or volatile substances to protect the sampling device (12) from degradation prior to use.
