if its not urine than its contaminated isn't it...
No, it is not safe to reuse synthetic urine. Once synthetic urine has been used, it is contaminated and should not be reused. Using contaminated urine may lead to inaccurate results in drug tests and other applications.
Contaminated water
It is very common for a person who is menstruating to contaminate a urine sample. Of course, contaminated urine samples are very common in general.
Yes, and it is unhealthy for everyone within the home. Pet urine causes odors when it dries and leaves bacteria contaminated salt deposits in the carpet. If it is a cat, what you are smelling is the ammonia created by the cat urine. Ammonia in high concentrations is not good for you or your newborn baby. All-in-all any kind of pet urine creates an unhealthy home environment.
Moisture? Contaminated refrigerant?
it can get contaminated by passing thought traits that are already contaminated
Dehydration
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.
They eat flies that are contaminated with harmful chemicals.
Insulin affects the concentration of glucose in the urine.
Urine is typically sterile when it exits the body, but it can become contaminated with bacteria from the skin or external environment within a few minutes to an hour.