Subpart E - Urine Specimen Collections
§ 40.65 What does the collector check for when the employee presents a specimen?
As a collector, you must check the following when the employee gives the collection container to you:
(a) Sufficiency of specimen. You must check to ensure that the specimen contains at least 45 mL of urine.
(1) If it does not, you must follow “shy bladder” procedures (see §40.193(b)).
(2) When you follow “shy bladder” procedures, you must discard the original specimen, unless another problem (i.e., temperature out of range, signs of tampering) also exists.
(3) You are never permitted to combine urine collected from separate voids to create a specimen.
(4) You must discard any excess urine.
Source: DOT Rule 49 CFR Part 40 Section 40.65 | Department of Transportation