TY - JOUR T1 - The <em>T</em><sub>LNO</sub>/<em>T</em><sub>LCO</sub> ratio in pulmonary function test interpretation JF - European Respiratory Journal JO - Eur Respir J SP - 311 LP - 311 DO - 10.1183/09031936.00041313 VL - 43 IS - 1 AU - J. Michael B. Hughes AU - Ivo van der Lee Y1 - 2014/01/01 UR - http://erj.ersjournals.com/content/43/1/311.abstract N2 - From the authors:We are grateful to C. Borland for his comments on our review of the TLNO/TLCO ratio (the ratio of the transfer factor of the lung for nitric oxide versus carbon monoxide) [1] and its clinical applications. Undoubtedly, TLNO, on its own, has a role to play in accessing alveolar function in terms of the membrane diffusing capacity, DM. The calculation of pulmonary capillary volume (Vc), on the other hand, requires a value for ΘblCO, the specific conductance of blood for carbon monoxide, and there is some doubt about its correct value. The TLNO/TLCO ratio does not require knowledge … ER -