0000950123-00-009424 424B1 1 20001016 LABORATORY CORP OF AMERICA HOLDINGS 0000920148 8071 133757370 DE 1231 424B1 33 333-46776 740877 358 S MAIN ST 4225 EXECUTIVE SQ STE 800 BURLINGTON NC 27215 3362291127 358 S MAIN ST 4225 EXECUTIVE SQ SUITE 800 BURLINGTON NC 27215 NATIONAL HEALTH LABORATORIES HOLDINGS INC 19940314 424B1 1 y41147bxe424b1.txt LABORATORY CORPORATION OF AMERICA HOLDINGS