- microalbuminuria defined as urinary albumin excretion, 20 to 200 µg/min in at least 2 of 3 overnight urine samples or macroalbuminuria defined as urinary albumin excretion, > 200 µg/min in at least 2 of 3 overnight urine samples, confirmed in the baseline collection; should baseline albuminuria data not to be available, the patient may be conditionally treated;