The global companion diagnostic tests in oncology market is anticipated to witness moderate to high growth as numerous market players are collaborating with pharmaceutical manufacturers, reports Transparency Market Research (TMR). Additionally, there is a rise in number of new entrants in the market, thereby putting the position of prominent players at risk. Prominent players in the companion diagnostic tests in oncology market include Illumina Inc., and Agilent Technologies Inc. These companies emphasize on new product developments and account for a substantial share in the global companion diagnostic tests in oncology market market.