Four numbers show up on every lab test, and they’re not all measuring the same thing. Total THC is the overall potency number — the one most people care about first. Delta-9 THC is the already-active form, the part that’s psychoactive without heat. THCA is the raw, non-intoxicating form found in the plant before it’s smoked or vaped — it converts to Delta-9 when heated, which is why it’s often the highest number on a flower test even though the product isn’t “that strong” until you actually use it. Total Cannabinoids is the broadest number, everything added together, not just THC-related compounds. It’s normal for THCA to read high while Delta-9 reads low on raw flower — that’s just how the plant works before heat gets involved.