Wondered how much you know about the actual tests. I have a Chemistry degree so I am familiar with the procedures of a GC/MS and I know that SAP is for something abuse protocol or something close to that, the code 5-50 stands for 5 types of drugs being checked to 50ng/ml but mine was checked for a "SAP 5-50+ GC/MS. what is the "+"? can't find that info anywhere.