urine-day: a fourth of them can't pass the scan

The scan produces its own black market: roughly a quarter of E.T.A.'s ranked over-fifteens "cannot pass a standard North American GC/MS urine scan," and so "clean urine is ten adjusted dollars a cc." The testing machinery, meant to police the body, instead prices a new commodity — the compliant body's fluid — and the academy's chemistry runs a parallel economy under the official one. The institution's instrument of purity is what makes purity a thing you can buy by the cubic centimeter.