Front Desk Phone: 314-454-8101 | Lab Phone: 314-362-2258

On-call Pager: 314-407-0269 | Fax: 314-454-5192

Email: Web:

Hours of operation: 8AM to 5:30PM CST, Monday-Friday
After hours: please leave a voice mail at 314-454-8101

For urgent matters, please page the Lab Manager or the Lab Supervisor at 314-407-0269.

Postal Mailing Address

Cytogenetics and Molecular Pathology
Washington University School of Medicine
660 S. Euclid Avenue, Campus Box 8118
St. Louis, MO 63110

Specimen Shipping Addresses

Washington University- Department of Pathology & Immunology
Clinical Support Services Office
425 South Euclid Avenue, Campus Box 8024
St. Louis, MO 63110

Specimen Drop-off Locations

Children’s Hospital
One Children’s Pl.
Central Receiving Rm 2N-25
St. Louis, MO 63110
Tel: (314) 454-4161

Institute of Health (IOH) Core Lab
425 S. Euclid Ave.
Room 4701
St. Louis, MO 63110
Tel: (314) 362-1470