Lung transfer factor (Tl) in a group of healthy subjects

Lung transfer factor (Tl) was determined by employing single breath technique in fortyfive healthy young males, and twenty females. These subjects belonged to similar socioeconomic and nutritional status and were non smokers. Morning value of Tl in sitting posture was worked out by using Morgan's Pulmotest C while subjects were at physical and mental rest. Male subjects in the age group of (18-26) yrs (av. 21.0 yrs) and height 1.68 M and weight 58.5 kgs, showed Tl of 30.6 +/- 3.8 ml/CO/mm Hg/min and females of same age group, height 1.57 M and weight 49.1 kg, had Tl values of 25.5 +/- 6.2 ml CO/mm Hg/min.