[Cytometry] CD19 question
Brian.Marsiglia at inova.org
Thu Jul 30 15:13:04 EDT 2009
I have this patient that comes in once a week for a lymphoma workup.
Every sample is negative for CD19 (this is expected) except the
FMC7/23/19/5/45 tube. In this tube, there is a huge CD19 positive
population, which co-expresses CD5. My compensation looks great, so I
don't think that is the issue.
This is the 3rd time I've seen this happen on this same patient. I've
not seen this on any other patients. If I break down this tube, and put
one antibody in each tube, I do not see the issue. It's only when all
antibodies are added. This patient is on anti CD20 therapy. I'm not
Any input would be appreciated.
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