A Haverhill licensed practical nurse pleaded guilty in federal court in Boston to drug tampering. Lauren Perrin, 47, pleaded guilty to one count of tampering with a consumer product, specifically the Schedule II controlled substance morphine, which is used for pain relief. While working as a licensed practical nurse at Maplewood Care and Rehabilitation Center in Amesbury, Perrin tampered with three bottles of morphine sulfate prescribed to a hospice patient. In an attempt to avoid detection, she replaced the extracted medication with another liquid. Perrin’s tampering lowered the potency of the three bottles of morphine sulfate to only 4–29% of the intended potency.