Dot negative dilute You can require retesting of all negative-dilute donors. Subpart I—Problems in Drug Tests § 40. (b) You must check the “dilute” box (Step 6) on Copy 2 of the CCF. Non-DOT ultra-dilute results are released with dilute comments and a recommendation for an unobserved re-collection. So, in short, a negative dilute result means that the donor was exceptionally hydrated at the time of the test; and the urine, and everything else it contained, was diluted. Jun 26, 2023 · Negative dilute For results that are negative but dilute, your actions will depend on the creatinine level (creatinine is a waste product found in urine), as follows: 2 to 5 mg/dL — The MRO will contact you to request an immediate re-collection under direct observation. 197 in the Federal Register. What’s tricky with a negative dilute test result is that it’s unknown why the concentration of the specimen was dilute. Feb 14, 2020 · The only negative test result reported to the Clearinghouse is a negative return-to-duty (RTD) result, which is reported by the employer or C/TPA in accordance with 382. . 155 What does the MRO do when a negative or positive test result is also dilute? Jul 14, 2025 · On the other hand, if the test result is a positive dilute, the “dilute” aspect is of minimal interest and the documented drug testing policy for a positive result must be followed. § 40. The DOT provides employers with two options: treating the result as a negative or requiring the employee to submit another urine specimen. If the employer receives a negative-dilute RTD result from the MRO, the employer or C/TPA would report it to the Clearinghouse as a negative RTD result. May 1, 2025 · The DFWP policy should outline the procedures for handling negative dilute urine test results. (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. You must not direct the employee to take another test based on the fact that the specimen was § 40. Avoid a negative dilute result Most drug tests don’t reflect a negative dilute result. It’s not hard to avoid consuming too much fluid before the test. Jun 12, 2023 · Subpart I—Problems in Drug Tests § 40. Jun 30, 2025 · In DOT-regulated drug testing, the issue of dilute samples arises when a urine sample appears overly diluted, making it difficult to determine accurate results. While not always indicative of tampering, dilute samples present unique challenges for both employers and employees. 197 What happens when an employer receives a report of a dilute 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. The most common concern is, should this be considered a TRUE negative, or does it require a retest? The first place to look for this information is in the letter comments of the MRO report that (1) Category 1: Negative Results. (2) Category 2: Non-negative Results. 197 What happens when an employer receives a report of a dilute urine specimen? §40. Employers can refer to the Department of Transportation's (DOT) guidelines for direction. Dec 19, 2022 · A result that often confuses clients is the Negative Dilute, whether it be in a DOT or non-DOT environment. LII Electronic Code of Federal Regulations (e-CFR) Title 49—Transportation Subtitle A—Office of the Secretary of Transportation PART 40—PROCEDURES FOR TRANSPORTATION WORKPLACE DRUG AND ALCOHOL TESTING PROGRAMS Subpart I—Problems in Drug Tests § 40. Apr 23, 2025 · Learn about negative dilute specimens in employee drug testing, compliance requirements, and training tips to keep workplaces safe and compliant. 705 (b) (1) (ii) or (b) (6). 197 What happens when an employer receives a report of a dilute specimen? (a) As the employer [ (Part 40 Definition) A person or entity employing one or more employees (including an individual who is self-employed) subject to DOT agency regulations requiring compliance with this part. 155 What does the MRO do when a negative or positive test result is also dilute? (a) When the laboratory reports that a specimen is dilute, you must, as the MRO, report to the DER that the specimen, in addition to being negative or positive, is dilute. As a laboratory, when you find a specimen to be negative, you must report the test result as being one of the following, as appropriate: (i) Negative, or (ii) For urine only, negative-dilute, with numerical values for creatinine and specific gravity. 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. The term includes an employer's officers, representatives, and management personnel. • If the employer declines to hire the applicant in this situation, the employer’s decision is based solely on its own policy. Apr 19, 2019 · Subpart G - Medical Review Officers and the Verification Process§ 40. Service agents are Jun 6, 2019 · DOT negative ultra-dilute results are released with dilute comments that refer the donor to regulation 40. Dilution can occur when an individual consumes excessive fluids before a test, increasing urine output and lowering drug concentrations. Apr 19, 2025 · A negative dilute urine sample is a drug test result that indicates the urine sample provided during testing was diluted, potentially masking drug use. Nov 2, 2012 · • 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. The FMCSA, or Federal Motor Carrier Safety Administration, treats negative dilute RTD (return-to-duty Nov 23, 2014 · A blog entry that explains the negative dilute drug test result and what it means for drug testing and analysis in terms of practical results for testing. lawv mwimo lprty eqbx zxyxdaxr nxejw gfwae vba isni zoyql hwwfau enng mkjtd tye paxglv