Hand warmer device for capillary blood collection

An apparatus for warming a hand of a user, comprising:

• a housing including a palm receiving area and a finger receiving area, the palm receiving area including a heat exchange surface and being configured to receive a palm of the hand of the user such that at least one finger of the hand extends beyond the palm receiving area and across the finger receiving area, the finger receiving area disposed adjacent to the palm receiving area and configured to accommodate a proximal end portion of the at least one finger of the hand in a predetermined orientation, the palm receiving area and the finger receiving area being disposed on an external surface of the housing;
• and
• a heat source disposed in the housing and operably coupled to the heat exchange surface, the heat source configured to generate and transfer heat to the heat exchange surface such that only the palm of the hand is directly heated by the heat exchange surface when the hand is in contact with the heat exchange surface and the at least one finger of the hand extends beyond the palm receiving area, across the finger receiving area, and beyond a terminal edge of the entire apparatus to accommodate manual collection of blood from a portion of the at least one finger spaced distally beyond the terminal edge, the heat source being at least one of a resistive heater or a film heater.