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We’re here to answer your questions about prescription drug monitoring, urine drug testing, toxicology, and result report interpretation. Use the form below to contact us with general inquiries not related to any specific patient or test order.

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Someone from our customer support team will contact you within 48 hours.


Phone Numbers

Client services
1.866.MY.QUEST (1.866.697.8378)

Drug toxicology consultation
For assistance with prescription drug monitoring results, please contact Quest Diagnostics toxicology consultant specialists. They are available Monday – Friday, 8:00 AM to 6:00 PM Eastern Standard Time.

1.877.40.RXTOX (1.877.407.9869)