What is a split specimen collection?

A split specimen collection involves the collection of two separate urine specimens from the same individual during a single collection session. This process is designed to ensure the integrity of the testing results by allowing for one specimen to be tested immediately while the other can be stored under controlled conditions for possible future analyses, if needed.

The rationale behind this practice is to provide a safeguard against disputes regarding the original test results. If there is a need to retest or confirm findings due to discrepancies or challenges, the second, split specimen can be utilized. This method enhances the reliability and validity of drug test results by offering a backup that maintains the chain of custody and minimizes the risk of tampering or contamination.

In contrast, collecting a single urine specimen for multiple tests does not provide the same level of verification or opportunity for retesting if questions arise. Furthermore, collecting two random urine specimens for testing without a clear purpose or controls does not align with the established protocols of split specimen collection. Similarly, collecting both urine and saliva at the same time introduces variables that are not relevant to the specific intent of ensuring both immediate and future testing capabilities with separate samples.