Why doesn't nephritic syndrome cause proteinuria?

[deleted500612]

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Yes I know it does mildly, but I am confused as to why in nephrotic syndrome there is much more severe proteinuria, yet not hematuria. Hematuria requires a greater permeability of the glomerulus than proteinuria, so intuitively I would think that hematuria would necessitate proteinuria. Can someone clarify why this is not the case?

 

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http://forums.studentdoctor.net/threads/nephritic-vs-nephrotic-driving-me-nuts.909731/