Yes. It's not an illegal product. They may ask you about it so just have the packaging with it and make sure it's not over 3oz if you're carrying it on the plane.
No
After opening and heating once how long does synthetic urine last
No. Synthetic urine is a thing. Felonies are crimes, and describe actions, not things. Purchasing or producing synthetic urine may be a felony, but the substance itself cannot be felonious.
There is no way to check. Synthetic urine is chemically equivalent to real urine. However most labs check the temperature of the urine and know the exact temperature it should be at the moment you give it to them. That's how most people get caught.
Ureters carry urine from the kidneys to the bladder.
Yes, you can carry creatine in your carry-on luggage on a plane.
Yes, you can carry condoms in your carry-on luggage on a plane.
Yes, you can carry wipes in your carry-on luggage on a plane.
only to eat
no
Drug users commonly use synthetic urine to pass drug tests required by employers and probation officers. Synthetic urine is made of sodium chloride of barium nitrate (depending on blood type) and red food dye.
Yes, you can carry shoes in your carry-on luggage when flying on a plane.