Access Thyroglobulin Reagent Kit. An in vitro diagnostic medical device (IVD) For use with the Access Family of Immunoassay Systems including the Access 2, UniCel DxI 800 and UniCel DxI 600, UniCel DxC 600i, and the UniCel DxC 880i, UniCel DxC 860i, UniCel DxC 680i, and UniCel DxC 660i systems.