🩸 Corrected Count Increment (Platelet CCI)
UseWhen to use: assessing platelet transfusion response or refractoriness.
StrataAdequate if CCI >7,500 (~1 h) or >4,500 (~24 h); else work up refractoriness.
LimitsWhen not to use: wrong unit yield/timing. · Pitfall: ×10⁹/L vs /µL confusion. · Not a sole HLA-matched order.
SourcePlatelet corrected count increment (CCI) response criteria
This-shift next steps
After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.
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Methodology · worked example, guidelines & full notes
Corrected increment.
When to use
When to use: assessing platelet transfusion response or refractoriness.
How it works
CCI = (post−pre platelets/µL) × BSA / (platelets transfused × 10¹¹).
Key points
- Corrected increment.
- 1 h / 24 h thresholds.
- Next: alloimmunization workup if low.
References
- Platelet corrected count increment (CCI) response criteria
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Pre-transfusion platelet count | 8 ×10⁹/L |
|---|---|
| Post-transfusion platelet count | 35 ×10⁹/L |
| Body surface area | 1.8 m² |
| Platelets transfused | 3.0 ×10¹¹ |
| Post count timing | ≈1 hour |
→CCI16,200
- Timing threshold：1h adequate if CCI ≥ 7,500
- Response：Adequate increment
- Δ PLT：27.0 ×10⁹/L
Verification & sources · governance
FAQ
Frequently asked questions
- Does Corrected Count Increment (Platelet CCI) upload patient data? Where is it calculated?
- Calculation runs locally in the browser; inputs and results are not uploaded. For licensed clinicians only; interpret with history, investigations and local protocols — not a diagnosis or prescription.
- How is Corrected Count Increment (Platelet CCI) calculated in practice? Can you show a worked example?
- Inputs: Pre-transfusion platelet count 8 ×10⁹/L, Post-transfusion platelet count 35 ×10⁹/L, Body surface area 1.8 m², Platelets transfused 3.0 ×10¹¹, Post count timing ≈1 hour → Result: CCI 16,200（Timing threshold: 1h adequate if CCI ≥ 7,500, Response: Adequate increment, Δ PLT: 27.0 ×10⁹/L）