Certificates of Analysis (COAs)
At Subway Series, transparency is a core part of who we are. Every product we offer—whether it’s a pre-roll or ground flower—comes with a Certificate of Analysis (COA) from a licensed third-party lab. These reports verify the potency, purity, and safety of each batch so you always know exactly what you’re getting.
Certificates of Analysis
What’s in a COA?
Each COA includes lab-tested details on:
THC and CBD levels
Terpene profiles
Pesticide and contaminant screening
Heavy metals and residual solvents
Microbial testing
