Thanks for using Healthcaremagic,
To answer your question yes one can get infection after blood test
it is possible but chances are very very less.
After going through the available details it seems that your liver enzymes are raised and they are searching for cause of rise of liver enzymes.
There are other causes of rise in liver enzymes apart from viral infection like alcohol, drugs, and fatty liver
If there is any history of possible exposure to such virus it is possible that you may have infected after the blood test, if any viral infection is detected.
Please wait for result of tests to come and then appropriate action can be taken
Wish you good health.
Dr.Akhilesh Dubey M.D.