DNA drug testing doesn't exist.
Urine, saliva, and some blood test kits for home/work use Gas-Chromography will test hair, blood, urine, saliva. There are reaction agents that change color depending on if they detect a drug or not. Spectral analysis of the light from a burned sample.
I have been using my sons urine for years now and I have never EVER failed a drug test. I am a woman too!
Yes, there is a difference between a hair sample and a urine sample. A hair sample can provide a longer history of substances used, as it can detect drug use over several months, while a urine sample typically reflects more recent drug use in the past few days. Both types of samples are commonly used for drug testing purposes.
for drug testing?
So that the sample can be run twice. It's a standard in forensic science to that verifies the results of testing.
No just urine testing.
They do Hair testing.
yes it better because there are more bacteria in a urine sample than a hair sample
Yes , there is pre-employment drug testing . I just got hired my self and I am looking to see if anyone knows if it is a simple urine test or is it more in-tense like hair or blood sample?
TND on a urine test typically stands for "Test Not Detected." This result indicates that the specific substance being tested for was not found in the urine sample. It is commonly used in drug screenings to show that the individual did not have detectable levels of the drug in their system at the time of testing.
urine
Hair and urine testing