Blood tests identify nutritional deficiencies by measuring levels of essential vitamins and minerals, guiding necessary dietary adjustments for health improvement.

Key blood tests for kidney function include serum creatinine, blood urea nitrogen (BUN), and estimated glomerular filtration rate (eGFR), which help diagnose and monitor kidney diseases.

Blood tests in personalized medicine help tailor treatments to individual genetic profiles, ensuring more effective and safer healthcare outcomes.

Essential blood tests like HbA1c and fasting glucose are crucial for diabetes management, helping monitor blood sugar levels and guide treatment plans.