Biological testing , is a model that tailors healthcare to individual patients based on their unique characteristics. These characteristics can include :-genetic, environmental, and lifestyle factors. Branches include:-1. Genomics and Genetic Profilingm,2. Biomarkers,3. Tailored Treatments,4. Patient Stratification, 5-Risk Assessment,6. Integrated Data and Analytics . Benefits of it :-Improved Treatment Outcomes -Cost-Effective Care- Preventive Healthcare- Patient Empowerment.