Urine protein/creatinine ratio — lab reference
In the reference guideUse laboratory and indication-specific thresholds; consider timed collection when needed.
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What’s searchable?Use laboratory and indication-specific thresholds; consider timed collection when needed.
A1 <30; A2 30-300; A3 >300. Persistence ≥3 months matters for CKD classification.
Calculated and context-dependent. Not a stand-alone diagnostic marker.
Collection completeness must be assessed.
Dipstick is albumin-biased. Confirm persistent findings with quantitative ratio.
Muscle mass, age, diet, medications, and assay matter. Review with eGFR, not alone.
Review albumin, globulin, and electrophoresis when indicated.
Calculated; interpret component values.
Approximate risk strata are sex-specific and assay-dependent.
Spot urine is useful mainly for populations; individual status requires careful collection and interpretation.
Assay-specific. Acute infection, injury, and chronic inflammation may elevate.
Color and clarity are nonspecific; review medications, hydration, and sediment.
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