A healthcare data management system for use with an instrument for determining the concentration of a medically significant component of a body fluid. The instrument includes a first port. The system includes a cradle for receiving the instrument. The cradle includes a second port for coupling to the first port to download data from the instrument to the cradle. The apparatus further includes a base having a third port. The cradle includes a fourth port for coupling to the third port to permit downloading to the base of data collected from the instrument by the cradle. The apparatus further includes an accessory box including a fifth port. Engagement of the cradle with the accessory box couples the fourth and fifth ports. Engagement of the accessory box with the base couples the third and fifth ports.