Do you have a DOT Clearinghouse or other safety sensitive position violation? Are you located in Tennessee or Kentucky? I'm your SAP. I've done hundreds of SAP cases (railroad, FAA, transit, pipeline, trucker, others) and am here to answer any questions you may have before we begin.
Clearinghouse faqs https://clearinghouse.fmcsa.dot.gov/FAQ
SAP is for a specific certification called a Substance Abuse Professional. This is a required credential needed when you seek out help to get your CDL or other DOT regulated operations restored to nonprohibited status once you have a Clearinghouse violation.
You are required to meet with your SAP for two evaluations. The total cost is $500 with April Tyson.