Yes.
You can have a culture or urine test to know if you are infected.
Diagnosis involves obtaining a sample of breast milk from the infected breast.
The second one, "A sample of policies were tested."
A sterile container must be used to collect a urine culture for many reasons. The sample collected cannot be tainted with any substance that is being tested for.
When blood is donated, samples are tested for several diseases, such as HIV. If a sample comes back positive for infection, it's discarded, and the donor is notified.
AIDS drugs are tested on people infected with the disease.
People are rarely infected with HIV through blood transfusion now. Scientists have not always known what HIV was or how to detect it. During this time, many people were infected with HIV as a result of blood transfusion. Thankfully, now every blood sample collected is tested for a variety of diseases, including HIV.
This is to preserve the urine sample until its tested.
You will have to be tested to determine if you are infected with HIV.
No
Only a small amount is used for any given test so a sample could be tested many times.
Testing for alcohol can be performed with an alcohol breath machine, with a sample of blood drawn, with a sample of urine, with a sample of mouth fluid, or with a sample of sweat.