Sample card transport method for biological sample testing machine

A method for transporting a sample card having first and second edges from an incubation station to a reading station in a sample testing machine, comprising the steps of:

• placing said sample card in a snug space defined by (1) a slot in an elongated ledge, said slot receiving said first edge of said card and defining a card travel direction from said incubation to said reading stations, and (2) a drive belt positioned parallel to said slot and supporting said second edge of said card, said slot and said drive belt being in vertical alignment with said sample card;
• biasing said drive belt towards said ledge so as to maintain pressure between said drive belt, said card and said slot;
• and
• moving said drive belt in said card travel direction so as to slide said card through said slot to said reading station without substantial slippage of said card relative to said belt, permitting precise movement of said card relative to said reading station.