What are the advantages and disadvantages of blood test?

Answer 1

Disadvantages · Blood tests are painful - To obtain blood, you must use a needle. · Sometimes a bruise develops where the needle was inserted. · As with any wound, an infection may develop where the needle was inserted. · Rarely, some people feel faint during a blood test. · Some people have a phobia of needles and a blood test causes great stress and anxiety for them. · Clerical error - If someone accidentally mislabels the blood tube and your name ends up on it. Later they find out that the blood was infected. You could be misdiagnosed. Advantages · Help diagnose certain conditions. · Monitor the activity and severity of certain conditions - to see if a condition is responding to treatment. · Check the body's functions such as liver and kidney function when you are taking certain medicines which may cause side-effects. · Check your blood group before receiving a blood transfusion.

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They are not very painful, and it's generally just the entry that hurts, not the extraction! I should know - I've had a quite a few in the last couple of years. Yes, sometimes they can leave a small bruise but it should heal quite quickly.

If you are afraid of needles and the sight of blood (even your own) then simply look away. The procedure is very simple and quite quick.