If I understand the question if the blood has drugs so will the urine. If you are trying to switch samples that will just get you into more problems.
Kidneys
kidneys
Your bladder has a urine witch cleans out your blood your urine is inside your bladder. A balloon shaped organ in the excretory system.
The kidneys filter the blood to produce urine
Menstruation does not expell any blood, contrary to the uninformed belief.
the kidney in a human body usually purifys the water you drink which turns into urine
Blood carries nutrients and hormones to every part of your body. Your kidneys' job is to clean the blood, so some hormones are absorbed into the byproduct, urine.
if its not urine than its contaminated isn't it...
To clean the blood and the urine i think also giving nutrients to the body
It does not clean out urine.
they clean your body, by taking out the toxins, and putting them in your urine
If a urine specimen isn't a clean-catch, mid-stream urine, it's possible for external blood or white blood cells to contaminate the sample, given the mistaken impression that there's urinary disease.