A companion diagnostic (CDx) is a diagnostic test used as a companion to a therapeutic drug to determine its applicability to a specific person.

Companion diagnostics are co-developed with drugs to aid in selecting or excluding patient groups for treatment with that particular drug on the basis of their biological characteristics that determine responders and non-responders to the therapy.

Companion diagnostics are developed based on companion biomarkers, biomarkers that prospectively help predict likely response or severe toxicity.   companion diagnostic tests has been successfully publishing quality Research articles from many years and looking forward to frame up eminent, outstanding issues with best quality research articles in this year. We request you to kindly submit and publish your paper in this best journal and get global acknowledgment .