Personalised Medicine: Pharmacogene Testing Download English PDF, 1.25MB, PDF Download Chinese PDF, 0.98MB, PDF Pharmacogenomics (PGx) test is the study of your genes and how you respond to medications.PGx can help doctors to identify which drugs may work best for the patient, determine the optimal dosage and avoid drugs that can potentially cause side effects for the patient. [Please download the PDF file if you are unable to view the image below.]