The VA Philadelphia VA Medical Center is seeking information from potential sources for radiopharmaceuticals and calibration materials, with work to be performed at 3900 Woodland Drive, Philadelphia, PA 19104. This is a Sources Sought notice only, not a solicitation for bids; no budget amounts have been specified. Interested parties must have an active SAM registration and, if a veteran-owned small business, be verified in the VetBiz Registry. Responses must include company details and a capability statement, and are due by Thursday, August 6th, 2026 at 3:00 pm EST. All inquiries must be submitted via email to the contracting officer; no phone calls will be accepted.