Table 1– Literature review of values in normal subjects for transfer factor of the lung for nitric oxide (TL,NO), transfer factor of the lung for carbon monoxide (TL,CO) and TL,NO/TL,CO ratio
First authors [ref.]Male/femaleTL,NO mmol min−1 kPa−1TL,CO mmol·min−1 kPa−1TL,NO/TL,CO ratio
TotalMaleFemaleTotalMaleFemaleTotalMaleFemale
van der Lee [13]65/5954±8.739±6.312±2.29.2±1.64.6±0.54.3±0.4
Aguilaniu [20]#161/142706114.412.84.85+4.8+
Zavorsky [21]66/64564510.88.85.19+5.13+
Guenard [1]7/752±6.739±210±0.57.3±0.375.2+5.3+
Zavorsky [19]1046±8.98.5±1.55.4±0.3
Glénet [12]20/764±1313.2±2.84.9±0.3
Zavorsky [22]8/070±6.115.4±1.54.6±0.1
de Bisschop [23]8/857±1213±2.34.4±0.3
van der Lee [24]35/3648±1110.9±2.44.36±0.6
Degano [25]27/840±6.79.0±1.34.34±0.33
Dressel [26]13/835±129.1±2.73.8±0.4
  • Data are presented as n or mean±sd . #: calculated from regression equations (table 2 [20]) for height 1.75 m and age ≤59 yrs. : calculated from regression equations (see appendix [19]) for height 1.75 m and age 40 yrs. +: calculated as mean TL,NO/mean TL,CO.