alb/cr ratio
The albumin-creatinine ratio in early morning spot urine collected on awakening (before breakfast or exercise) is considered as a valid test for albumin excretion in urine. It is simple and inexpensive; it does not require a timed 24-hour collection of urine; and, most importantly, it gives a quantitative result that correlates well with 24-hour urine values over a wide range of protein excretion.