Keystone Lab Announces Addition of Xylazine Testing to its In-House Menu

ASHEVILLE, N.C., July 10, 2023 /PRNewswire/ — Keystone Lab, a dual-CAP accredited and CLIA certified lab based in Asheville, NC, has officially added xylazine to its in-house urine clinical toxicology menu. Keystone provides clinical and forensic toxicology testing services throughout…