Determination of impairment based solely on drug test results is problematic due to the lack of an established relationship between the concentration of a drug and the impairment it causes.
As with all our testing options, full customer support is provided.
Because of privacy concerns, most urine collections are unobserved.
A knot in the top of the rope secures it in place during collection.
The donor inserts the oral fluid collection device into the mouth to collect the oral fluid.
Other materials, especially synthetic materials, do not have the absorbency of cotton.