Hemoglobin-Corrected DLCO & KCO
Hemoglobin- and alveolar-volume-corrected DLCO (ATS/ERS): the anemia/polycythemia correction plus KCO (DLCO ÷ VA).
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Measured DLCO
- 20 mL/min/mmHg
- Hemoglobin
- 10 g/dL
- Alveolar volume VA
- 5 L
- Sex
- Male
Result: Hb-corrected DLCO 23.8 mL/min/mmHg; KCO 4.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Meaning
- Anemia falsely lowers, polycythemia falsely raises the uncorrected value.
What you enter
- Measured DLCO
- Hemoglobin
- Alveolar volume VA
- Sex
How this is calculated
- Formula
- Hb-adjusted DLCO = observed·(10.22 + Hb)/(1.7·Hb) men, ·(9.38 + Hb)/(1.7·Hb) women/children; KCO = DLCO/VA.
Macintyre N, Crapo RO, Viegi G, et al. Standardisation of the single-breath determination of carbon monoxide uptake in the lung (ATS/ERS). Eur Respir J. 2005;26(4):720-735. Hb correction: Cotes JE, et al. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.