Blood tests are crucial for identifying nutrient deficiencies by measuring levels of vitamins, minerals, and other essential substances. Accurate diagnosis helps guide dietary adjustments to rectify deficiencies and improve overall health.

Blood tests monitor the effectiveness of hormone therapy by measuring hormone levels and ensuring they are within the therapeutic range, thereby optimizing treatment and minimizing side effects.

Blood tests can detect early signs of liver diseases by measuring liver enzymes, bilirubin, and other markers. This early detection allows for timely intervention and better management of liver health.

Blood tests in pre-employment health screenings are crucial for identifying underlying health issues, ensuring employee fitness for the job, and protecting workplace safety. They benefit both employers and employees by promoting overall health and reducing health-related workplace disruptions.