Holiday Closing
The laboratory will be CLOSED on the following upcoming holidays (We will not be open to receive samples)
- November 27 & 28, 2025 (Thanksgiving Holiday)
- December 25, 2025 (Christmas Day)
- January 1, 2026 (New Year’s Day)
- January 19, 2026 (MLK Jr Day)
- May 25, 2026 (Memorial Day)
- June 19, 2026 (Juneteenth)
- July 3, 2026 (Observation of Independence Day)
- September 7, 2026 (Labor Day)
- November 26 & 27, 2026 (Thanksgiving Holiday)
- December 25, 2026 (Christmas Day)
If blood samples are drawn during this time, please refrigerate and send once the lab reopens. Thank you!
More Information
For more information about the available diagnostic tests, sample requirements, and the protocols for requesting tests, please contact:
Phone: 215-573-9161
Fax: 215-573-5940
Email: gdllab@pennmedicine.upenn.edu
Please send all samples to this address:
Genetic Diagnostic Laboratory
University of Pennsylvania
Room 560 Clinical Research Building
415 Curie Boulevard
Philadelphia, PA 19104
Please send all written correspondence to this address:
Genetic Diagnostic Laboratory
University of Pennsylvania
Department of Genetics
415 Curie Boulevard, Suite 500
Philadelphia, PA 19104–6145
