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Blood tests detect anaemia and infections that could complicate early pregnancy. Thyroid function tests are important because any imbalance in thyroid levels can affect ovulation, implantation, and foetal brain development. Screenings for conditions like thalassemia, cystic fibrosis, or sickle cell identify genetic risks. The health of your eggs, hormones, nutrient stores, and medical conditions can influence your fertility, pregnancy journey, and baby’s health.