The only way to be sure is if they actually watch you urinate and supply the sample to be tested.
Urine contains many chemicals that help scientists tell where it came from. The most valuable for your question would be hormones and DNA.
urine is waste from your body it cleans out your body i hope that helps
Urine exits the body through the urethra.
Urine exits the body through the urethra.
One material that leaves the body in urine is protein.
Mainly because it does not take in urine. Urine is a waste product produced by the body
If the urine is not formed the body will be poisoned itself and death will result, because the urine is the one who rid waste and toxins in the body through the process of excretion of urine..
The little thermometer strip on the side of the container is there to prove the urine came out of your body. If you turn in a sample that's only 89 degrees, it won't be tested because urine that comes from your bladder to the collection cup is 98 degrees.
Urine exits through the male's penis.
The molecular formula for urine is CH4N2O. Urine is the liquid by-product of the body.
Urine is considered sterile within the body.
Everyone's urine is the same temperature as their body. Normal body temperature is 98.6.