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Nishant Rajendra Tiwari: My 12-Step Thrombocytopenia Workup
Nishant Rajendra Tiwari/X
Dec 2, 2025, 09:36

Nishant Rajendra Tiwari: My 12-Step Thrombocytopenia Workup

Nishant Rajendra Tiwari, HemOnc Fellow at OU Health, shared a post on X:

“My 12-Step Thrombocytopenia Workup
(Not Medical Advice)

1. Review baseline counts first. Rule out pseudothrombocytopenia.

2. Evaluate for critical conditions: TTP, HIT, or DIC?

  • Assess heparin exposure – Calculate 4T score.
  • Peripheral smear for schistocytes.
  • Check LDH/Haptoglobin/Bilirubin, PT/aPTT/Fibrinogen.

3. Assess for acute leukemia or bone marrow involvement?

  • Examine peripheral smear for abnormal/neoplastic cells.
  • Consider imaging if clinically indicated.
  • Do we need a bone marrow exam?

4. Active life-threatening bleeding? Do we need a platelet transfusion?

5. Review drug-induced thrombocytopenia. Always consult latest literature for implicated medications.

6. Investigate secondary causes:

  • Nutritional deficiencies: B12, Folate, Copper, Zinc.
  • Infections: HIV, Hepatitis, CMV, EBV, HSV (clinically guided).
  • Sepsis leading to DIC.
  • Endocrine disorders: TSH, Free T4.

7. Review imaging for cirrhosis/splenomegaly. If inconclusive, obtain abdominal ultrasound.

8. Consider mechanical causes: Dialysis/ECMO/IABP/cardiopulmonary bypass/artificial heart valve?

9. Evaluate pregnancy-related disorders: HELLP, AFLP, gestational thrombocytopenia.

10. Assess for autoimmune conditions if clinically warranted. Consider SLE and other rheumatological diseases.

11. Consider rare but serious differentials:

  • CAPS, other TMA causes, PNH
  • Post-transfusion purpura, HLH
  • Pursue only with appropriate clinical suspicion

12. If no clear etiology identified, consider ITP as diagnosis of exclusion.

Key Clinical Considerations:

  • Critically ill patients frequently have multifactorial thrombocytopenia [A combination of some of the above].
  • Primary HLH presenting de novo in adults is exceedingly rare.
  • Thrombocytopenia with thrombosis: Consider DIC, TTP, HIT, PNH, or VITT.

Nishant Rajendra Tiwari: My 12-Step Thrombocytopenia Workup

[Image AI Generated] ”

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B12 CMV Copper DIC EBV Folate Health Hematology Hemostasis Hemostasis Today Hepatitis HIT HIV HSV Medicine Nishant Rajendra Tiwari thrombocytopenia Thrombocytopenia Workup TTP Zinc
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