Hello.
We have the same issue now. Doctor said that we should find the reason and repeat the tests until blood is gone.
It really depends on the amount of blood in urine.
In our case it was "trace" so we have to treat the condition and go for retest.
We have been suggested that it might be caused by drinking water cleaned with sand filters used by some manufacturers of soft drinks.
So it is worth to try to cut beer, bottled juices, water etc. for a week before the exam.
We have the same issue now. Doctor said that we should find the reason and repeat the tests until blood is gone.
It really depends on the amount of blood in urine.
In our case it was "trace" so we have to treat the condition and go for retest.
We have been suggested that it might be caused by drinking water cleaned with sand filters used by some manufacturers of soft drinks.
So it is worth to try to cut beer, bottled juices, water etc. for a week before the exam.