metzger130
Networker
- Messages
- 81
- Best answers
- 0
I am trying to get some information on if you can do Presumptive and Definitive drug screenings on the same day with same specimen. It is my impression that you can only do Definitive if you have an unusual positive/negative and want to see what is going on. Is this true? If not can you give me a link so I can review it.
Thank you,
Rob
Thank you,
Rob