External controls critical to crucial assays
August 2025—CAP TODAY publisher Bob McGonnagle spoke on May 14 with Jessica Van Allen, PhD, technical support lead for ZeptoMetrix, and Meghan Starolis, MS, PhD, HCLD(ABB), senior science director for infectious diseases at Quest Diagnostics, Chantilly, Va.


Bob McGonnagle: Jessica Van Allen, I’d like to talk about some of the hot topics in molecular infectious disease testing, and you mentioned in our discussions offline that viral load testing for transplant viruses is becoming ever more important in the field. Can you make a few remarks about that?
Jessica Van Allen, PhD (ZeptoMetrix): There’s testing that is done using laboratory-developed tests and testing performed using FDA-cleared assays. Those are the two big buckets of testing in the labs of our customers. Meghan and I attended a conference recently at which a couple of the speakers talked about viral load testing for common transplant viruses—EBV, CMV, VZV, some adenoviruses. We’ve been playing in that field for a long time in terms of molecular controls for viruses, so they’re products we’ve had on the shelf. Continue reading …
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This roundtable discussion is sponsored by ZeptoMetrix.