Question

How is blood test useful in diagnose the disease

Answer 1

in the blood we use serum fluid and check in it the presence of antibodies if they are present then patients is infected

Answer 2

Hi mate

Here is your answer

Blood tests help doctors check for certain diseases and conditions. They also help check the function of your organs and show how well treatments are working. Specifically, blood tests can help doctors: Evaluate how well organs—such as the kidneys, liver, thyroid, and heart—are working.

Thanks for asking ✌✌