A device that can warm a hand of a user and/or patient to facilitate collection of blood samples (e.g., capillary blood sample collection) is described herein. The device provides controlled amounts of heat directed to the palm of a user and/or patient to facilitate collection of high-quality capillary blood samples. The device is designed in such a way to provide a comfortable resting position for the hand that allows heating the hand of the user and/or patient while simultaneously providing access to the finger of the user and/or patient to carry out one or more steps in preparation for collection of capillary blood samples from the finger. The device will also monitor the temperature to limit the max temperature to a safe level, control the palm temperature to a desired level, and use a conductive material to enable rapid heating.