There are single-sample tests and split-sample tests. If you've got a split-sample test, the second half of the sample goes into the freezer for six months regardless. For single-sample and the other part of a split-sample test, they retain the sample if it tests positive, but if it tests negative they normally dump it.
People who test urine are called "lab technicians." Urine is sent to medical labs, where it's tested by people who also run tests ordered by doctors to diagnose diseases.
I can't be dedected by a stick test, but it could in a lad test. It has creatine in it and some labs now, especially if it's for probation, test for that to see if you used a urine cleaner.
Nicotine does show in urine tests, but most labs do not look for it being a legal non-intoxicant.
some labs keep the urine frozen for up to one year but say it depends on what drug their tesetng for. They can keep it in the fridge for 1 week before it is discarded.
This is not a guaranteed method . Drinking water will dilute your sample possible allowing it to dive below the level you need to get to pass the test. It will also cause your urine to become very clear and labs will be able to tell that you have been trying to flush your system. Labs check for gravity, pH, creatin levels, etc (home test can not) so if you diluted your urine you can pass a home test , but not a Lab (will show dilution which is just like failing the test).
yes you can store urine I did it for four hours and then used a pregnancy test and my results were positive and accurate
No. They will both set off the amphetamines test. Technically, you could see exactly what amphetamine compound it is by GC/MS, but even labs don't do that test unless asked to.
Some labs do and some labs don't. To be safe, I would assume that they do. It is very easy to distinguish male urine from female urine.
No. Labs can tell the difference between men and women's urine because of the hormones in them.
I recommend gargling with it.
When a human female is pregnant, she starts to generate a hormone called hCG (human choriogonadotropin). It is specific to a pregnant female as it is made in the placenta, and it is excreted in the urine. Most labs will run an hCG test on all urine samples as part of the standard urinalysis.
about 3 to 9 days