What does tlco mean? what does it measure?

Transfer Factor: Tlco is a lung function test measuring the diffusing capacity of the lungs for carbon monoxide. The measurement looks at carbon monoxide uptake from a single inspiration in a standard time (usually 10s). It can be low in many diseases including emphysema and pulmonary fibrosis. When it is is high it has different meanings.

DLCO?: If your actually meant dlco, it measures how well oxygen is absorbed from the air you breathe into your blood stream and how well carbon dioxide is removed from your blood stream into the air you breathe out ...