Creatinine
Creatinine is a waste product produced by your muscles during normal metabolism. Your kidneys filter creatinine from your blood, so its level reflects how well your kidneys are working.
Category: Metabolic Panel
Also known as: creatinine, creat, cr, serum creatinine, kreatinin
Reference range: 0.7–1.3 mg/dL (Source: ABIM)
Standard unit: mg/dL
High values may indicate
High creatinine levels may indicate kidney disease, dehydration, high muscle mass, or a diet very high in meat.
Low values may indicate
Low creatinine levels may indicate low muscle mass, severe liver disease, or pregnancy.
Frequently asked questions
- What is a normal Creatinine level?
- A typical reference range for Creatinine is 0.7–1.3 mg/dL (source: ABIM). Reference ranges vary by laboratory, age, and sex, so always compare against the range on your own lab report.
- What units is Creatinine measured in?
- Creatinine is most commonly reported in mg/dL. Labs in different countries may use other units — you can convert between them with BloodId's blood test unit converter.
- Where do Creatinine reference ranges come from?
- BloodId uses ABIM standard reference ranges and educational information from MedlinePlus (see our methodology). Reference ranges still vary by lab, age, and sex, so always compare against your own report.
- Can I track Creatinine over time?
- Yes. Upload results from any lab and BloodId charts your Creatinine over time against its reference range, so you can see whether the trend is rising, falling, or stable.
Related biomarkers
Source: MedlinePlus, U.S. National Library of Medicine
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