Gary Huff is leaving Laboratory Corporation of America, the company said in a regulatory filing on Dec. 21. Huff had been CEO of LabCorp Diagnostics. The firm said that it and Huff agreed that his "employment with the company would terminate effective Dec. 31, 2018." LabCorp gave no reason for his departure. LabCorp Chairman and CEO David King will become CEO of LabCorp Diagnostics on an interim basis.