A medical laboratory operator with locations in East Texas says thousands of customer accounts have been hacked. Quest Diagnostics Inc. says a hack of an internet application on its network has exposed the personal health information of about 34,000 people. The stolen data did not include Social Security numbers, credit card accounts, insurance details or any other financial information. Quest Diagnostics Inc. has locations in Paris, Texarkana ,Tyler, Longview and Lufkin.