There are 2 types of drug testing—presumptive and definitive.
There are 2 types of drug testing—presumptive and definitive.
When to use presumptive with definitive UDT:
In general, best practices include presumptive testing and confirming unexpected positives or negatives with definitive testing, as well as direct-to-definitive testing when a presumptive test for a specific drug is not available.
Data shows that when performing this 2-step presumptive with definitive testing approach, we find that on average only 2.5 drugs need to be reflexed to definitive, which maximizes patient care while minimizing costs.
In those cases when POC testing is needed, definitive testing can be used to confirm the results.