Hello there.
I can understand your concern.
No special precaution to be taken.
Just go to the lab and give the blood sample.
Of you are having someone coming to take the sample, then wait for them and just let them take a blood sample.
It's as simple as that.
Nothing special.
Best regards.
Dr. Anil Kumar Jain.
Bangalore.
Answered2017-07-13 15:46:54
Let others know if this answer was helpful