how is blood test usefull to diagnose the diseases explain with daily life situations
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Blood tests are helpful for diagnosis of diseases.Diseases are caused by different kinds of pathogens, like, bacteria (G+ve or G-ve),viruses, fungi,mycoplasma, parasites (nematodes, cestodes,protozoa etc.) .By blood tests, we can get know the cause of the diseases and get treatment accordingly and get rid of different diseases
By blood tests we can get know about the status of different constitutes of blood and if anyone of these is less or more,we can take measures to keep ourselves healthy.
Answer of this question is however very lengthy and complicated. I have answered as per the standard of secondary level.
Hope you will advice others too for going through regular blood check up.
May it be helpful to you not only as exam but also for sound health.
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