None of the above choices .They are donating blood for a good cause .They are trying to rehydrate their body .They are diagnosing the medical issue in their body .
What may be the reason for the IV and blood test ?
It took me an hour to get in . Then they told me I 'd need to have an IV and get blood taken . After being asked the same questions fifty times I got an X - ray done . Then the tech came to take blood and put in the IV .