An example fluid collection system includes a fluid collection assembly and at least one porous cartridge configured to be reversibly attached to the fluid collection assembly. The fluid collection assembly includes a body and a connector piece. The connector piece includes a conduit connector configured to be connected to a conduit and an arm connector. The fluid collection system also includes an arm that forms part of the porous cartridge or the fluid collection assembly. The arm includes one or more arm walls that define an arm opening at one end, a cavity extending through at least a portion thereof, and one or more perforations extending through the arm walls that allow one or more bodily fluids to flow from an exterior of the arm into the cavity. The porous cartridge includes a porous material defining a hollowed region. The hollow region is configured to receive the arm of the fluid collection assembly.