BUN/creatinine ratio — lab reference
In the reference guideCalculated and context-dependent. Not a stand-alone diagnostic marker.
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What’s searchable?Calculated and context-dependent. Not a stand-alone diagnostic marker.
A1 <30; A2 30-300; A3 >300. Persistence ≥3 months matters for CKD classification.
Ask your clinician to use laboratory and indication-specific thresholds; consider timed collection when needed.
Protein intake, hydration, catabolism, GI bleeding, and kidney function affect result.
Muscle mass, age, diet, medications, and assay matter. Ask your clinician to review with eGFR, not alone.
Calculated; interpret component values.
Approximate risk strata are sex-specific and assay-dependent.
Screening cutoff depends on units, method, medications, potassium, and collection protocol.
This ratio is useful only when both measurements were made using a reliable paired method.
Dipstick is albumin-biased. Ask your clinician to confirm persistent findings with quantitative ratio.
Urine/plasma method, creatinine correction, collection timing, and assay matter.
Normal range only. Warfarin therapeutic targets are indication-specific.
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