A testing system according to one or more embodiments may include: a smear preparing apparatus that prepares a smear slide by smearing a sample on a glass slide; a smear transporting apparatus that transports the smear slide; a controller; and a display part. The controller may cause the display part to display a selection screen on which one or more of the smear preparing apparatus and the smear transporting apparatus can be selected. Based on a selection on the selection screen, the one or more of the smear preparing apparatus and the smear transporting apparatus selected on the selection screen may run respective start operations.