The urine of a thirteen year old boy turned dark brown several weeks after a bout with "strep throat." The diagnosis was glomerulonephritis. The urine was dark brown because red blood cells are in the urine.
For each solute below, state whether you will also see an increase in that solutes concentration in this patient's urine and give a reason why you believe so.
A.) Urea
B.) K+
C.) Serum Albumin