I understand what the SAP is but my test was designated SAP 6/300 W/NIT, I'm guessing 6 is the number of drugs being tested for but I don't understand what the 300 designates or why you couldnt explain it??
As stated in post #7..

300 = 300ng cutoff limit for a certain (off-topic) drug that will not be up for any discussion in the forum, in order to maintain compliance with the Board Rules (linked to my signature).
Therefore, for the purposes of maintaining compliance, the only drug of concern will be THC.

As far as W/NIT goes that means "with nitrites check" - This is a validity test checking for excessive nitrites as well as checking the creatinine, pH, and specific gravity. In short, they will be checking for adulterants, overdilution, and substituted samples.