The total net sales for the Top Labs, which consist of the Top 5 Supplier-Owned Lab Networks and Top 18 Independent Labs, will hit $2.9 billion in 2016, up almost 4 percent from 2015. The Top 5 accounted for 78 percent of the total net sales, versus 76 percent in 2015.

The total Rx sales for the Top Labs will climb to $2.6 billion in 2016, a 4.3 increase from last year. The Top 5 accounted for 82 percent of Rx sales, versus 80 percent in 2015.

Collectively, the Top Labs will produce a total of 164,011 Rx jobs in 2016, up 7 percent from 2015. The Top 5 Supplier-Owned Lab Networks will produce 82 percent of the Rx jobs, versus 79 percent in 2015.

The Top 5 operate 208 lab locations, up from 190 in 2015. The Top 18 operate 76 lab locations, down from 81 last year. The shift is mostly due to acquisitions of Independent Labs by Supplier-Owned Lab Networks.

The Top 5 employ 10,455 workers, up 5 percent from 2015. The Top 18 employ 2,585 workers, down 4.4 percent from last year.

There were no Supplier-Owned Lab Networks in 1992, the first year VM published the Top Labs Report.