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§40.197 — What happens when an employer receives a report of a dilute urine specimen?
 
(a)
As the employer, if the MRO informs you that a positive drug test was dilute, you simply treat the test as a verified positive test. You must not direct the employee to take another test based on the fact that the specimen was dilute.
 
(b)
As an employer, if the MRO informs you that a negative test was dilute, take the following action:
 
(1)
If the MRO directs you to conduct a recollection under direct observation (i.e., because the creatinine concentration of the specimen was equal to or greater than 2mg/dL, but less than or equal to 5 mg/dL (see §40.155(c)), you must do so immediately.
 
(2)
Otherwise (i.e., if the creatinine concentration of the dilute specimen is greater than 5 mg/dL), you may, but are not required to, direct the employee to take another test immediately.
 
(i)
Such recollections must not be collected under direct observation, unless there is another basis for use of direct observation (see §40.67 (b) and (c)).
 
(ii)
You must treat all employees the same for this purpose. For example, you must not retest some employees and not others. You may, however, establish different policies for different types of tests (e.g., conduct retests in pre-employment situations, but not in random test situations). You must inform your employees in advance of your decisions on these matters.
 
(c)
The following provisions apply to all tests you direct an employee to take under paragraph (b) of this section:
 
(1)
You must ensure that the employee is given the minimum possible advance notice that he or she must go to the collection site;
 
(2)
You must treat the result of the test you directed the employee to take under paragraph (b) of this section — and not a prior test — as the test result of record, on which you rely for purposes of this part;
 
(3)
If the result of the test you directed the employee to take under paragraph (b)(1) of this section is also negative and dilute, you are not permitted to make the employee take an additional test because the result was dilute.
 
(4)
If the result of the test you directed the employee to take under paragraph (b)(2) of this section is also negative and dilute, you are not permitted to make the employee take an additional test because the result was dilute. Provided, however, that if the MRO directs you to conduct a recollection under direct observation under paragraph (b)(1) of this section, you must immediately do so.
 
(5)
If the employee declines to take a test you directed him or her to take under paragraph (b) of this section, the employee has refused the test for purposes of this part and DOT agency regulations.

[68 FR 31626, May 28, 2003, as amended at 69 FR 64867, Nov. 9, 2004; 73 FR 35974, June 25, 2008]

 
§40.197 — DOT Regulatory Guidance
 
Question 1: May an employer have a policy of declining to hire applicants who have a negative dilute test result on a pre-employment drug test?

Guidance: The Department's rules do not require an employer to hire anyone. That decision is an employer's.

While §40.197(b) authorizes an employer to obtain one additional test following a negative dilute result (in pre-employment or other testing situations), a negative dilute test result is a valid negative test for DOT's purposes.

Because a negative dilute test result is a negative test for DOT program purposes, the employer is authorized to have the applicant begin performing safety-sensitive functions.

If the employer declines to hire the applicant in this situation, the employer's decision is based solely on its own policy. The employer cannot claim that its action is required or authorized by DOT rules.

   Reason: