Table 8—

Definitions of abnormalities in albumin excretion

CategorySpot collection (μg/mg creatinine)
Normal<30
Microalbuminuria30–299
Macro (clinical)-albuminuria≥300
  • Because of variability in urinary albumin excretion, two of three specimens collected within a 3- to 6-month period should be abnormal before considering a patient to have crossed one of these diagnostic thresholds. Exercise within 24 h, infection, fever, CHF, marked hyperglycemia, and marked hypertension may elevate urinary albumin excretion over baseline values.