Solstas Lab Partners, which does medical and diagnostic testing at labs around the state, announced today that it plans to add as many as 500 jobs to its Guilford County operations over the next five years.

The company employs more than 720 full-time workers and 140 part-time positions at its High Point facility. In addition to adding jobs the company plans to invest about $11.6 million in the facility over the next five years.