Mismatch in drug‑test thresholds

Child‑welfare agencies and hospitals often use toxicology cutoffs or confirmatory practices that are far more sensitive (and less context‑calibrated) than federal safety or clinical standards, producing investigations and family disruption from trace detections. The gap centers on how labs, hospitals, and child‑protective systems translate low‑level detections into legal action without standardized provenance, threshold rationales, or proportionality rules. — Standardizing testing thresholds, requiring transparent laboratory provenance, and aligning evidentiary standards across agencies would prevent life‑altering collateral harm and improve fairness and due process in family‑welfare enforcement.