goMDnow Logo

Drug testing is a necessary component of maintaining a drug-free workplace, but what happens when you receive a negative dilute drug test result? Understanding the implications of a negative dilute drug screen can help you make informed decisions as an employer.

What does negative dilute mean?

A negative dilute drug test result typically means that the urine sample provided during drug testing was diluted, potentially masking the presence of drugs. Dilution can occur when an individual drinks excessive amounts of water or fluids before the drug test, which can lead to higher urine output and lower concentrations of drugs in the urine.

Creatinine is a natural waste product of muscle metabolism and is used as a marker of urine concentration. If the creatinine level in a urine sample is below the normal range i.e. 20mg/dL, it may indicate that the sample is diluted.

Read about:

Can Synthetic Urine be detected in a Drug Test?

Reasons for False Positive Drug Test Results

What to do after a negative dilute test?

If a drug test comes back negative dilute here are the general guidelines provided by the DOT (Department of Transportation) that can be used for non-DOT companies as well:

Contact the Medical Review Officer (MRO): The MRO is responsible for reviewing all drug test results for DOT-regulated employers. If your test comes back negative dilute, the MRO will contact you to determine if there is a valid medical explanation for the dilution. If not, they will report the result as negative with a note of "dilute."

Provide additional information: If you have a medical condition that may cause dilute urine, you will need to provide the MRO with documentation from a licensed medical professional. This documentation should explain the condition and how it may have affected the test result.

Prepare for additional testing Depending on the employer's policies, a drug test negative dilute could result in additional testing/ retake testing, such as a hair or blood test. Make sure to follow any instructions given to you by the MRO or employer.

How to Avoid a Negative Dilute Drug Test

There are several steps you can take to avoid a fake negative dilute urine drug test, including:

  • Avoid drinking excessive amounts of water or other fluids before the test.
  • Follow any pre-test instructions provided by the testing laboratory or your employer.
  • Avoid using any diuretics in the days or weeks leading up to the test.
  • Don't tamper with the sample
  • Ensure to arrive at the collection site with your first-morning urine still in your bladder to provide it as the specimen.

Bottom Line

By following the tips for avoiding a negative dilute drug test, you can increase your chances of providing a non-dilute sample and avoid any potential consequences.

Always consult with a medical professional if you have any concerns or questions about drug testing.

goMDnow provides answers and solutions to all your drug testing queries, we also help employers by controlling all processes of DOT/non-DOT drug testing to run your companies smoothly. Feel free to contact us.

goMDnow blog