In the course of a study of various types of benign albuminuria, we have had an opportunity to study thoroughly the so-called postural albuminuria, in which albuminuria becomes manifest in certain persons if they assume the upright position and disappears if they assume the recumbent position. This type of benign albuminuria is also spoken of as orthostatic or orthotic albuminuria.
Concerning this condition, there is still much controversy regarding the factors of its production and causation. Maxon,1 who gave the earliest description of the condition, called attention to the fact that the albuminuria was apparently not associated with evidence of renal disease. He distinguished an albuminuria of adolescence with a fairly permanent showing of albumin in the urine and a remittent type in which the albumin completely disappeared from the urine when the subject was recumbent and reappeared after assumption of the erect posture. Pavy2 reported a similar