Science2010sUnited Stateshigh confidence

A single drug-use screening question about past-year illegal drug use or nonmedical prescription medication use was found to be 100% sensitive and 73.5% specific for detecting a drug use disorder in a primary-care setting.

Notes on verification

Confirmed directly by the peer-reviewed original study (Arch Intern Med 2010) accessible via PMC, with matching figures corroborated by independent institutional press releases and secondary summaries. No contradicting sources found. [tier=gold indep_score=1.0 clusters=3 claim_tier=notable]

Sources