Natera discussed its cancer and transplant rejection testing businesses, while Exact Sciences explained how it will benefit from its Genomic Health acquisition.
The company said it anticipates $19.2 million in revenues for full-year 2019, which would miss the consensus Wall Street estimate of $19.4 million.
Though the firm's top-line figures fell just shy of analysts' estimates, its installed base of ePlex analyzers grew 49 percent year over year.
Test volume for its Cologuard test was up 63 percent year over year, while test volume for Genomic Health's Oncotype DX jumped 14 percent.
Revenues of $850.5 million beat the company's prior revenue guidance, as well as the consensus Wall Street estimate.
The company also said that preliminary full-year 2019 revenues are expected to be up 6 percent, with sample-to-answer revenues up more than 20 percent.
Quidel said that it expects fourth quarter 2019 revenues to be in the range of $151 million to $152 million, which would eclipse analyst expectations.
The firm also announced an exclusive distribution deal covering Israel for its T2 Resistance, T2Bacteria, and T2Candida panels
Most diagnostics companies saw increases in share prices compared to last year, resulting in a significant jump in the 360Dx Index.
The firm said that in its product pipeline in 2019 it focused on organ transplant and lung health, involving use of its multiplexed research-use TORdx Lung tests.