China sales were down 26 percent in the first half of the year due to volume-based procurement programs and healthcare pricing reforms in China.

An assessment of the documentation for 30 over-the-counter diagnostic tests found none met the current regulatory standards.

An assessment of the documentation for 30 over-the-counter diagnostic tests found none met the current regulatory standards.

The blood test is designed to detect the accumulation of amyloid protein deposits in the brain, a hallmark of Alzheimer's disease.

The company said on Thursday that most of the increase came from organic revenues while acquisitions contributed to the company's growth.

The investment bank said that Exagen is poised for growth with a differentiated autoimmune test that outperforms conventional biomarker-based tests.

The cash deal includes ambulatory outreach laboratory services in 13 states and includes patient service centers and in-office phlebotomy sites.

The test was developed in collaboration with Eli Lilly and can be used with other clinical information to rule out Alzheimer's disease as the cause of cognitive decline.

The firm posted before the market open on Tuesday results that beat expectations, and it raised its full-year revenue and earnings guidance.

The firm's life sciences revenues rose 1 percent, while diagnostics revenues were up 2 percent and biotechnology revenues jumped 8 percent.

Genetic Signatures also reported second quarter sales on par with the prior-year-quarter, reflecting higher respiratory testing in the Australian winter.