252 



W. M. RiGAL, W. M. Hunter 



the evening meal the hormone level fell to base line. During the second three hours 

 after the meal the levels rose (secondary rise) and fell spontaneously to base line 



Subject Cf Plasma growth hormone levels In children al night 



n K 



Age 13% \ \ 



Bone age 12 %z \ \ / \ ^^^ ^ 



SMS 1 



- m 





J I j^ 



Venous 

 Blood 

 Sugar 

 Tng7o 



20 

 Plasma 

 HGH 



/ \ • 



Fig. 3. Nocturnal Growth Hormone Study. Subject 5 



Venous 

 Blood 

 Sugar 



Tng% 



SOq oral glucose 

 Fig. 4. Plasma Growth Hormone Levels Following a Glucose Test Meal 



again. For the remainder of the night the plasma hormone levels fluctuated between 

 the base line and a maximum which was remarkably constant for a particular 

 individual. 



