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AbQader Bedil: 7 Urgent Red Flags in a Peripheral Blood Smear
Feb 25, 2026, 14:13

AbQader Bedil: 7 Urgent Red Flags in a Peripheral Blood Smear

AbQader Bedil, Medical Laboratory Technologist at French Medical Institute for Mothers and Children- FMIC, Laboratory Incharge at Stanikza Diagnostic clinic, shared a post on LinkedIn:

“Peripheral blood smear: 7 quick red flags

Automated CBCs are great — but the smear still saves lives. These seven findings on a peripheral blood film should trigger urgent action.

  1. Blasts or Auer rods — any new blasts plus urgent hematology review (possible acute leukemia).
  2. Schistocytes greater than or equal to 1% — think thrombotic microangiopathy (TMA); correlate with thrombocytopenia and hemolysis markers and phone the clinical team.
  3. Marked spherocytosis with hemolysis — suggests warm autoimmune hemolytic anemia; request DAT and hemolysis panel.
  4. Leukoerythroblastic picture (nucleated RBCs plus immature myeloid cells) — flag for bone-marrow infiltration or severe stress; consider urgent marrow referral.
  5. Massive platelet clumping or satellitism — likely pseudothrombocytopenia; repeat on warmed or citrate tube before making clinical decisions.
  6. Marked dysplasia (eg abnormal granulation, hypogranular neutrophils) — could signal myelodysplasia; recommend CBC trend and hematology input.
  7. Polychromasia with very high retic count — indicates brisk hemolysis or recent bleed; correlate with LDH/bilirubin/haptoglobin.

What the lab should do:

  • Confirm visually and quantify (use ICSH guidance for schistocyte counting).
  • Add a one-line interpretive comment in the report that names the likely concern and the recommended next test(s).
  • Phone clinicians for combinations that are potentially life-threatening (eg schistocytes plus thrombocytopenia; blasts with cytopenias).
  • Attach or include a de-identified smear image when possible — clinicians read images faster than paragraphs

Which smear finding makes you phone the clinician immediately?

  1. Blasts/Auer rods
  2. Schistocytesgreater than or equal 1% plus thrombocytopenia
  3. Massive platelet clumps (pseudothrombocytopenia)”

AbQader Bedil: 7 Urgent Red Flags in a Peripheral Blood Smear

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