Creatinine — lab reference
In the reference guideMuscle mass, age, diet, medications, and assay matter. Ask your clinician to review with eGFR, not alone.
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What’s searchable?Muscle mass, age, diet, medications, and assay matter. Ask your clinician to review with eGFR, not alone.
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.
Urine/plasma method, creatinine correction, collection timing, and assay matter.
Your lab may use its own range. Symptoms, medicines, and the types of white blood cells also matter.
Altitude, smoking, hydration, androgen therapy, and pregnancy may shift values.
Ask your clinician to consider altitude and iron/B12/folate status. Pregnancy requires trimester-specific ranges.
Hydration and altitude are major modifiers. Ask your clinician to review alongside hemoglobin and RBC indices.
Macrocytosis and microcytosis require cause-specific interpretation.
The test method matters. Ask your clinician to review with MCV and MCHC.
Analyzer-specific; hemolysis and cold agglutinins may interfere.
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