Calloway provides collection and courier services with a staff of certified personnel throughout the US.

All of Calloway's collections are performed using industry standards. In addition, Calloway's training staff can assist physicians in implementing best practices for the collection process.

Calloway’s fleet of collection vehicles is equipped with satellite tracking to constantly monitor the location of specimens and ensure timely service. A dispatch office is manned 24/7 to track each courier and can be called to schedule emergency pickups.