KCO — Carbon Monoxide Transfer Coefficient

Calculate and interpret the KCO (DLCO/VA, carbon monoxide transfer coefficient per unit alveolar volume) to distinguish intrinsic lung disease from reduced lung volume in diffusion impairment.

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Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Calculate and interpret the KCO (DLCO/VA, carbon monoxide transfer coefficient per unit alveolar volume) to distinguish intrinsic lung disease from reduced lung volume in diffusion impairment

Each component has a specific meaning:

  • Reduced lung volume in diffusion impairment — The reduced lung volume in diffusion impairment recorded for the scenario being assessed.

Note: Interpret the kco coefficient result against the thresholds and context described above.

How to Use

Enter the reduced lung volume in diffusion impairment for the scenario you are assessing. Calculate and interpret the KCO (DLCO/VA, carbon monoxide transfer coefficient per unit alveolar volume) to distinguish intrinsic lung disease from reduced lung volume in diffusion impairment. Use the kco coefficient result to inform your calculation.

Frequently Asked Questions