A DOT drug test has a specific process to deal with donors having a shy bladder. Shy bladder is when the donor cannot produce a specimen sufficient enough for the urine drug test s/he has to remain at the collection facility until s/he can produce one.

In a nutshell this is what DOT rules under 49 CFR part 40, at paragraph 40 .193. say:

For DOT testing the minimum amount of urine required is 45 ml
Specimens from different voids cannot be combined
Donors are permitted up to 40 oz. of water and up to 3 hours.
At the 3 hour mark it becomes a “Refusal To Test”
If a donor leaves the collection site before providing sufficient specimen, it is considered a “Refusal To Test”
Most shy bladder cases resolve themselves in 30 min. or less

At InOut Labs our staff is well versed to deal with a donor having a shy bladder and we comply with all the DOT regulations associated with it.

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Read more about this topic on our blog:
Problem Collections: Shy Bladder ► https://tinyurl.com/ymx56raz
If a donor has a “shy bladder,” how long can s/he stay at the collection site to provide a urine specimen? ► https://tinyurl.com/yd65wfs7
Shy Bladder In A DOT Drug Test ► https://tinyurl.com/5dudktd6