SAP 520/300

Hello all. I have to take a test tomorrow and I can't find any info on what it will entail. I am taking it at quest diagnositics and the test is listed as "UR Screening 36235n SAP 520/300" . I imagine this is a urine test, but does anybody know what the 520/300 means? Thanks in advance for any info.

They forgot to hyphenate so it would correctly read as "5-20/300".

Anyway, 5-20 means a 5 panel screen with a 20 ng cutoff limit for THC, 300 ng limit for a certain other drug panel which, for the purposes of maintaining compliance, wont be up for further discussion in the forum.