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A 35-year-old white male presents to his primary care doctor with complaints of headache and malaise. His blood pressure is elevated. He has periorbital and pretibial edema. Urinalysis reveals heavy proteinuria. Which of the following is the most likely principle component of his proteinuria?

A. Albumin
B. Kappa light chains
C. Lambda light chains
D. Tamm-Horsfall protein
E. Transthyretin
 

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I think it is A.

Though all the above mentioned proteins can be excreted in urine, albumin has the maximum contribution towards oncotic pressure in capillaries. And decrease in oncotic pressure results in edema.
 

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I think is A

Because albumin controls intravascular pressure. He is also loosing it through the urine... I think.
 
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