Aug. 10, 2026

165: Making Sense of IDEXX Cancer Dx - Canine Lymphoma Screening. With Dr Sandra Nguyen

I love any new tool that can make my life as a veterinarian easier and get better outcomes for my patients, so when I first heard about IDEXX's new CancerDx test I was excited, but I had questions! Like, how is a cancer screening test useful to my patients, how reliable is it, why can’t I just use FNA, and how am I going to incorporate it into my workflows?

In this episode I chat to oncologist Dr Sandra Nguyen to find out how she thinks about this test for her patients, and where it fits into our lives as general practitioners.

We cover:

  • A genuinely memorable way to finally keep sensitivity and specificity straight
  • The advertised numbers for Cancer Dx, and how that compares to FNA cytology
  • The two clinical scenarios where Dr Sandra finds it most useful: the vaguely "cancery" dog, and annual screening in at-risk breeds
  • Why you should keep those slides on the shelf when owners are undecided about chemo
  • What to actually do with a positive result in a happy, healthy dog


If this is the kind of clinical content you want more of, our full library of case-based CE lives at ⁠https://thevetvault.com⁠.

Want to join us on a ski lift? Vets On Tour is where CE happens in ski boots, saunas, and the occasional conference room. Come find us at https://vetsontour.com/