What does DNR mean on a CBC panel?

DNR stands for “Do Not Report.” It may appear next to specific test results on your CBC panel to show that additional reporting isn’t necessary.

A CBC (complete blood count) typically measures several blood components, including:

  • White Blood Cells (WBC)
  • Red Blood Cells (RBC)
  • Hemoglobin
  • Hematocrit
  • Mean Corpuscular Volume (MCV)
  • Mean Corpuscular Hemoglobin (MCH)
  • Mean Corpuscular Hemoglobin Concentration (MCHC)
  • Red Cell Distribution Width (RDW)
  • Platelet Count
  • Mean Platelet Volume (MPV)
  • Differential Counts (Neutrophils, Lymphocytes, Monocytes, Eosinophils, Basophils)

Sometimes, lab technicians review a blood smear manually if automated readings suggest abnormalities. If results show no irregularities, a full manual analysis isn’t needed. In this case, DNR appears next to tests to indicate no additional reporting is required.

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