Corrected Count Increment (platelet refractoriness)
Corrected count increment for platelet transfusion = increment*BSA/dose; low CCI at 1h/24h indicates refractoriness.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Pre-transfusion platelet
- 10 x10^9/L
- Post-transfusion platelet
- 40 x10^9/L
- Body surface area
- 1.8 m^2
- Platelet dose
- 3.0 x10^11
Result: CCI 18000 (adequate increment for this transfusion).
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Pre-transfusion platelet
- Post-transfusion platelet
- Body surface area
- Platelet dose
How this is calculated
AABB Technical Manual, 20th ed., 2020. CCI = (post - pre platelet, x10^9/L) x 1000 x BSA (m^2) / dose (x10^11).
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.