Urinary albumin categories

Measure

Normal or mildly increased (A1)

Moderate increased (A2)

Severely increased (A3)

Albumin excretion rate (mg per 24 h)

<30

30 - 300

>300

Albumin-to-creatinine ratio (mg/g)

<30

30 - 300

>300

Albumin-to-creatinine ratio (mg/mmol)

<3

3 - 30

>30