Why do doctors draw blood?

Answer 1

a blood check doesn't always have to do with your particular illness at the time you have it taken. the doctor looks at your charts and may see that you haven't had a blood work up in a while and draws blood to check your colesteral-sugar levels-infections-hiv -anemia and many other things as well as drugs and booze. it's just a way of giving your body a small tune-up and to head off any problems before they become big problems

Answer 2

multiple reasons...your blood can indicate the functions of vital organs in the body such as the kidneys, liver, thyroid and heart. Blood test are necessary when a physician needs to know if you are getting too much or not enough of many medications including aspirin or coumadin which thin the blood, dilantin which is given to prevent seizures and lipitor which is given for high cholesterol to name a few. Blood studies also show the components of the blood itself such as white blood cells (if elevated can mean there is infection present), red blood cells, hemaglobin and hematocrit which can tell if a person is not getting enough iron in the diet. Hope this helps

Answer 3

Doctors draw blood from patients for medical reasons, and usually to have the blood tested in the laboratory to assist in finding out any abnormalities or illness in the patients.

Answer 4

Two common reasons a doctor may take blood tests are to check your blood sugar. And another thing doctors will do is do a full blood count to check for anaemia and other conditions.