Question

How is blood test useful to diagnose the disease. Explain with a daily life situation

Answer 1

Explanation:

By blood test we can know the num of platelets,WBC,RBC,present in our body.and by this we can predict the disease. ex- if we got dengue we will have the less platelets and there will be a fall in num o f platelets so we can check by blood test. ... if so then why does ourr eye detect ...