Customer Service

Laboratory Client Services

Hours: Monday – Friday 7:00 AM – 6:00 PM (CST)
Phone: (713) 441-4411 or 1 (855) 522-3282 (LABDATA)
After Hours, Weekends & Holidays, please contact Tech-In-Charge
Phone: (713) 441-1869
Fax: (713) 441-4412

Dear Patients and Clients. Due to the confidential nature of test result information, we cannot respond via email to requests for test results. Please contact your health care provider directly or call the HMDL client services number. Thank you

HMDL Outreach

Phuong T. Nguyen, MBA
Reference Lab Operations Manager, HMDL
Office: (713) 441-3484
Mobile: (281) 409-0621
Fax: (713) 441-3489
Email: ptnguyen@HoustonMethodist.org
HMDL@HoustonMethodist.org
Houston Methodist Diagnostic Laboratories
6565 Fannin Street, B490
Houston, TX 77030