In observance of Thanksgiving, We will be closed on Thursday, November 27th and Friday, November 28th. Keystone will resume normal business hours on Monday, December, 1st.
August 31, 2022
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Keystone Laboratories, a CAP-accredited North Carolina licensed laboratory and CLIA-licensed lab, is committed to helping you make important decisions that impact the safety and health of your patients with greater confidence. Clients in 48 states can get prescription drug and substance abuse recovery monitoring, specialized testing, workplace drug testing, screening, and program management services from Keystone. Contact Keystone Laboratories today to receive the industry-leading laboratory testing services!

In observance of Independence Day on July 4th, Keystone will be closed. Normal office hours will resume on the 5th of July.