DILUTE EXPLAINED - VIDEO

A dilute sample is reported by the testing laboratory whenever the donor's urine sample shows a creatinine level of less than 20 mg/dL and a specific gravity below 1.003. This indicates that the sample may be adulterated, as it has been excessively diluted, likely due to the donor consuming abnormal amounts of liquids just prior to the urine drug test. This behavior can stem from an effort to flush out toxins or drugs from their system, a water-rich diet, or possibly an undisclosed medical issue.

C/TPA Recommendations: Re-test using hair and urine tests for more reliable dilute sample guidance on the donor's drug-free status. This approach will safeguard the donor's privacy and medical history while ensuring the employer can have peace of mind, knowing that the individual is genuinely drug-free and safe to hire.

A dilute sample is reported by the testing laboratory anytime the donor's urine sample shows a creatinine level of less than 5 mg/dL and a specific gravity of less than 1.003. This indicates that the sample may be an adulterated sample due to excessive dilution, making it difficult for the lab to obtain a reliable urine drug test result. This often happens when the donor consumes excessive amounts of liquids just prior to testing, potentially in an effort to flush out toxins or drugs from their system, follow a water-rich diet, or due to some undisclosed medical condition. 

C/TPA Recommendations: It is advisable to re-test via hair and urine to obtain a more reliable assessment of the donor's drug-free status. This approach will protect the donor's privacy and medical history while providing employers with peace of mind that the individual is truly drug-free and safe to hire.

A substituted sample is reported by the testing laboratory whenever the Donor's urine drug test shows a creatinine level of less than 2 mg/dL, alongside a specific gravity of less than 1.001. This indicates that the sample does not conform to normal human urine and suggests that the Donor may have provided an adulterated sample. According to dilute sample guidance, this situation is treated as a 'Refusal To Test' and must be regarded as a 'Positive' finding.

An invalid sample is reported by the testing laboratory whenever an adulterated sample is detected. This occurs when the lab finds an unidentified adulterant, an interfering substance, or when the sample exhibits abnormal physical characteristics or unusual concentrations of endogenous substances. These issues can hinder the laboratory from completing testing and obtaining a valid drug test result.

C/TPA Recommendation: To ensure accurate results, a re-test via hair and urine drug test is advised. This method not only provides dilute sample guidance but also protects the donor's privacy and medical history. It gives the employer peace of mind, confirming the individual is genuinely drug-free and safe for hire.

An adulterated sample is reported by the testing laboratory whenever the Donor's specimen has been altered. This is evidenced by test results that reveal either the presence of a substance not normally found in that type of specimen or an abnormal concentration of an endogenous substance. Essentially, this indicates that the Donor introduced an adulterating agent into their sample during the collection process to circumvent the urine drug test. 

C/TPA Recommendations: Such a situation is regarded as a 'Refusal To Test' and must be treated as a 'Positive' finding, underscoring the importance of dilute sample guidance in maintaining the integrity of drug testing.

For support regarding adulterated sample or dilute sample guidance related to your urine drug test, please call us at (760) 770-6068 or e-mail Info@fdtsi.com.