This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: miscellaneous, Subject name: Pathology
Range of microalbuminuria is? 
Select and explain. 
A. 10-99 mg/day, B. 20-199 mg/day, C. 30-299 mg/day, D. 40-399 mg/day
C: 30-299 mg/day
Answer: C: 30-299 mg/day 
Explanation: Systemic hypeension causes major effects in three main organs--hea and its blood vessels, nervous system, and kidneys. An impoant and early clinical marker for renal injury from hypeension and risk factor for cardiovascular disease is macroalbuminuria (i.e. albuminuria > 150 mg/day or random urine albumin/creatinine ratio of >300 mg/gm creatinine), or microalbuminuria estimated by radioimmunoassay (i.e. microalbumin 30-300 mg/day or random urine microalbumin/creatinine ratio of 30-300 mg/gm creatinine). Ref: TEXTBOOK OF PATHOLOGY 6th EDITION - HARSH MOHAN PAGE NO:687