A carrier assembly and related sterile kits are disclosed. The carrier assembly is configured to be used with a sensor assembly for determining a characteristic of a human body. The carrier assembly comprises a frame member comprising a sidewall defining a central opening configured to receive at least a portion of the sensor assembly and laterally extending wing members hingedly attached at a proximal end thereof to the sidewall of the frame member. The laterally extending wing members each comprise a cavity proximate a distal end thereof and configured to receive a magnet. Related kits and systems are also disclosed.
