What Happened

Lori Robertson, a registered nurse from Salem, New Hampshire, was indicted by a federal grand jury and arrested in late October 2025 for allegedly removing liquid oxycodone from a non-verbal hospice patient's medication and replacing it with a household cleaning chemical.

According to the allegations, Robertson used a syringe to withdraw liquid oxycodone intended for a dementia patient at a long-term rehabilitation facility in Amesbury, Massachusetts, then refilled the container with a household cleaning chemical. A non-verbal patient cannot describe what they tasted, what was missing, or what was substituted — which makes tampering against this population particularly hard to surface.

The substitution means the patient was both deprived of prescribed medication and exposed to an unapproved chemical — the two harms that make medication tampering a distinct federal crime. Robertson pleaded not guilty, and the case remains pending. She is presumed innocent unless and until proven guilty.

What Went Wrong

The public record does not detail the facility's controls, so the analysis below is hypothesis based on the conduct alleged. The substitution had to survive whatever count and administration checks the facility performed — which suggests those checks did not include inspecting medication contents. Substitution of a patient's liquid medication with a foreign substance typically points to:

  • No verification that the medication administered to the patient was the medication dispensed — the tampered container was never checked before dosing.
  • Tamper-evident seals or packaging absent or not verified between dispensing and administration.
  • No reconciliation of liquid controlled substance quantities on the unit, so the removed volume was never detected.
  • Medication administration for non-verbal patients not witnessed or otherwise verified, leaving the patient unable to confirm receipt.
  • Red flags — such as a staff member with disproportionate access to a specific patient's medications — not reviewed.
  • No process for verifying that liquid medication containers were in their original, sealed state at each administration.

How It Could Have Been Prevented

  • Verify tamper-evident integrity of every dose container at the point of administration, particularly for liquid controlled substances.
  • Reconcile liquid controlled substance quantities dispensed to the unit against documented administration, waste and returns.
  • Consider witnessed administration or independent verification for high-risk patients, including those who cannot self-report.
  • Restrict and log access to individual patients' controlled substance containers, and review the logs.
  • Train staff on the red flags of diversion, especially substitution and tampering, and publicize a confidential reporting pathway.
  • Conduct unannounced audits of liquid controlled substance storage and administration on units caring for non-verbal patients.

Related Guidance

Sources