Credit Suisse analyst A.J. Rice assumed coverage of Quest Diagnostics with a Neutral rating and edged up the firm's price target on the stock to $107 from $104 after its Q4 report came in broadly in-line with expectations.

Quest Diagnostics announced the launch of a new blood biomarker test for phosphorylated tau 217, or p-tau217. P-tau217 is a biomarker associated with Alzheimer's Disease, supported by research as useful for an early diagnosis of AD. The test is the latest addition to the AD-Detect portfolio of blood tests for assessing the risk of Alzheimer's Disease, which also includes testing for an array of AD biomarkers, including p-tau181 and amyloid beta proteins, as well as Apolipoprotein E isoform and plasma testing, for patients with cognitive impairment. The test is expected to be available for ordering on April 26.