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Biomarkers

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Creatinine

Blood

Creatinine

Also known as: Cr, Creat, sCr

COMMON RANGE

0.76 – 1.27

mg/dL

1.85

Labcorp

Adult Male

↗

See all sources ↓

CONVERT & COMPARE

mg/dL

88.4

µmol/L

88.4

umol/L

88.4

mcmol/L

Reference ranges across 10+ sources

Adult reference ranges from 22 entries across 8 named sources, shown in mg/dL. Compare side-by-side.

SOURCE

SEX

AGE

RANGE

VISUAL

CITE

Mayo Clinic Laboratories

Male

≥15y

0.74 – 1.35 mg/dL

↗

Mayo Clinic Laboratories

Female

≥16y

0.59 – 1.04 mg/dL

↗

Labcorp

Male

≥18y

0.76 – 1.27 mg/dL

↗

Labcorp

Female

≥18y

0.57 – 1 mg/dL

↗

Quest Diagnostics

Male

≥18y

0.6 – 1.24 mg/dL

↗

Quest Diagnostics

Female

≥18y

0.5 – 0.96 mg/dL

↗

RCPA / AACB Australasian Harmonised Reference Intervals

Male

≥18y

0.7 – 1.2 mg/dL

↗

RCPA / AACB Australasian Harmonised Reference Intervals

Female

≥18y

0.5 – 1 mg/dL

↗

Nordic Reference Interval Project

Male

≥18y

0.68 – 1.13 mg/dL

↗

Nordic Reference Interval Project

Female

≥18y

0.57 – 1.02 mg/dL

↗

JSCC / JAMT Japan

Male

≥18y

0.65 – 1.07 mg/dL

JSCC / JAMT Japan

Female

≥18y

0.46 – 0.79 mg/dL

NUMBER — Dutch Reference Value Study

Male

19y–51y

0.69 – 1.28 mg/dL

↗

NUMBER — Dutch Reference Value Study

Male

51y–66y

0.69 – 1.36 mg/dL

↗

NUMBER — Dutch Reference Value Study

Male

66y–81y

0.7 – 1.52 mg/dL

↗

NUMBER — Dutch Reference Value Study

Male

≥81y

0.74 – 1.69 mg/dL

↗

NUMBER — Dutch Reference Value Study

Female

19y–51y

0.54 – 1.03 mg/dL

↗

NUMBER — Dutch Reference Value Study

Female

51y–66y

0.54 – 1.12 mg/dL

↗

NUMBER — Dutch Reference Value Study

Female

66y–81y

0.54 – 1.28 mg/dL

↗

NUMBER — Dutch Reference Value Study

Female

≥81y

0.55 – 1.49 mg/dL

↗

Turkey Nationwide Reference Intervals

Male

≥18y

0.66 – 1.04 mg/dL

Turkey Nationwide Reference Intervals

Female

≥18y

0.56 – 0.8 mg/dL

Mayo Clinic Laboratories

Male · ≥15y

↗

0.74 – 1.35 mg/dL

Mayo Clinic Laboratories

Female · ≥16y

↗

0.59 – 1.04 mg/dL

Labcorp

Male · ≥18y

↗

0.76 – 1.27 mg/dL

Labcorp

Female · ≥18y

↗

0.57 – 1 mg/dL

Quest Diagnostics

Male · ≥18y

↗

0.6 – 1.24 mg/dL

Quest Diagnostics

Female · ≥18y

↗

0.5 – 0.96 mg/dL

RCPA / AACB Australasian Harmonised Reference Intervals

Male · ≥18y

↗

0.7 – 1.2 mg/dL

RCPA / AACB Australasian Harmonised Reference Intervals

Female · ≥18y

↗

0.5 – 1 mg/dL

Nordic Reference Interval Project

Male · ≥18y

↗

0.68 – 1.13 mg/dL

Nordic Reference Interval Project

Female · ≥18y

↗

0.57 – 1.02 mg/dL

JSCC / JAMT Japan

Male · ≥18y

0.65 – 1.07 mg/dL

JSCC / JAMT Japan

Female · ≥18y

0.46 – 0.79 mg/dL

NUMBER — Dutch Reference Value Study

Male · 19y–51y

↗

0.69 – 1.28 mg/dL

NUMBER — Dutch Reference Value Study

Male · 51y–66y

↗

0.69 – 1.36 mg/dL

NUMBER — Dutch Reference Value Study

Male · 66y–81y

↗

0.7 – 1.52 mg/dL

NUMBER — Dutch Reference Value Study

Male · ≥81y

↗

0.74 – 1.69 mg/dL

NUMBER — Dutch Reference Value Study

Female · 19y–51y

↗

0.54 – 1.03 mg/dL

NUMBER — Dutch Reference Value Study

Female · 51y–66y

↗

0.54 – 1.12 mg/dL

NUMBER — Dutch Reference Value Study

Female · 66y–81y

↗

0.54 – 1.28 mg/dL

NUMBER — Dutch Reference Value Study

Female · ≥81y

↗

0.55 – 1.49 mg/dL

Turkey Nationwide Reference Intervals

Male · ≥18y

0.66 – 1.04 mg/dL

Turkey Nationwide Reference Intervals

Female · ≥18y

0.56 – 0.8 mg/dL

Ages 0–17 (CALIPER)

PEDIATRIC

12 age- and sex-stratified entries from the Canadian Laboratory Initiative on Pediatric Reference Intervals.

SOURCE

SEX

AGE

RANGE

VISUAL

CITE

CALIPER — Canadian Pediatric Reference Intervals

All

0–15d

0.32 – 0.92 mg/dL

↗

CALIPER — Canadian Pediatric Reference Intervals

All

15d–2y

0.1 – 0.36 mg/dL

↗

CALIPER — Canadian Pediatric Reference Intervals

All

2y–5y

0.2 – 0.43 mg/dL

↗

CALIPER — Canadian Pediatric Reference Intervals

All

5y–12y

0.31 – 0.61 mg/dL

↗

CALIPER — Canadian Pediatric Reference Intervals

All

12y–15y

0.45 – 0.81 mg/dL

↗

CALIPER — Canadian Pediatric Reference Intervals

Female

15y–19y

0.49 – 0.84 mg/dL

↗

CALIPER — Canadian Pediatric Reference Intervals

Male

15y–19y

0.62 – 1.08 mg/dL

↗

Mayo Clinic Laboratories

All

0–1y

0.17 – 0.42 mg/dL

↗

Mayo Clinic Laboratories

All

1y–6y

0.19 – 0.49 mg/dL

↗

Mayo Clinic Laboratories

All

6y–11y

0.26 – 0.61 mg/dL

↗

Mayo Clinic Laboratories

Male

11y–15y

0.35 – 0.86 mg/dL

↗

Mayo Clinic Laboratories

Female

11y–16y

0.35 – 0.86 mg/dL

↗

CALIPER — Canadian Pediatric Reference Intervals

All · 0–15d

↗

0.32 – 0.92 mg/dL

CALIPER — Canadian Pediatric Reference Intervals

All · 15d–2y

↗

0.1 – 0.36 mg/dL

CALIPER — Canadian Pediatric Reference Intervals

All · 2y–5y

↗

0.2 – 0.43 mg/dL

CALIPER — Canadian Pediatric Reference Intervals

All · 5y–12y

↗

0.31 – 0.61 mg/dL

CALIPER — Canadian Pediatric Reference Intervals

All · 12y–15y

↗

0.45 – 0.81 mg/dL

CALIPER — Canadian Pediatric Reference Intervals

Female · 15y–19y

↗

0.49 – 0.84 mg/dL

CALIPER — Canadian Pediatric Reference Intervals

Male · 15y–19y

↗

0.62 – 1.08 mg/dL

Mayo Clinic Laboratories

All · 0–1y

↗

0.17 – 0.42 mg/dL

Mayo Clinic Laboratories

All · 1y–6y

↗

0.19 – 0.49 mg/dL

Mayo Clinic Laboratories

All · 6y–11y

↗

0.26 – 0.61 mg/dL

Mayo Clinic Laboratories

Male · 11y–15y

↗

0.35 – 0.86 mg/dL

Mayo Clinic Laboratories

Female · 11y–16y

↗

0.35 – 0.86 mg/dL

About Creatinine

This test measures creatinine levels in a sample of your blood and/or urine (pee). Creatinine is a normal waste product in your body. It's made when you use your muscles and some of the muscle tissue breaks down. Daily creatinine production stays fairly constant unless there's significant muscle injury.

Normally, your kidneys filter creatinine from your blood and remove it from your body in your urine. If there is a problem with your kidneys, creatinine can build up in your blood and less may be released in urine. If blood and/or urine creatinine levels are not normal, it may be a sign of kidney disease.

Creatinine in blood may be measured by itself or as part of a group of tests called a comprehensive metabolic panel (CMP) or a basic metabolic panel (BMP). Your health care provider may order these tests as part of a routine checkup.

Main source: MedlinePlus ↗

Useful for

Check the health of your kidneys

Diagnose kidney disease

Monitor known kidney problems and see how well treatment is working

Check for side effects from medicines that may affect your kidneys

Calculate an estimated glomerular filtration rate (eGFR), which uses your blood creatinine along with your age, weight, height, and sex to estimate how fast your kidneys filter waste — a more accurate way to measure kidney health than creatinine alone, and helpful for showing how serious kidney disease may be

Calculate a creatinine clearance by comparing creatinine in blood and urine, which can help identify the cause of high or low blood creatinine in people who have very high muscle mass or a loss of muscle mass from age, illness, or the loss of an arm and/or leg

Calculate a urine albumin to creatinine ratio (UACR), sometimes called a microalbumin creatinine ratio, to give a more accurate measurement of how much albumin is in your urine — larger amounts of albumin in urine may be a sign of kidney damage

Compare blood creatinine with BUN (blood urea nitrogen) when both are measured as part of a CMP or BMP, which can help find out the cause of a kidney problem

Main source: MedlinePlus ↗

Interpretation

Creatinine levels considered normal for you depend on how much muscle you have, what you eat, your age, and how active you are. If you're healthy, your levels are usually fairly stable over time.

Higher than normal creatinine often means your kidneys are not filtering as well as they should. The change in creatinine is more meaningful at lower levels: a small rise from a normal number can reflect a big drop in kidney function, while a similar rise at very high levels reflects a smaller change.

Lower than usual creatinine is less common. It can be seen in people with very little muscle (for example, after a long illness or with conditions that cause muscle loss), in pregnancy, or with certain liver problems.

Some medicines (such as cimetidine and trimethoprim) and a high-meat meal before the test can raise creatinine without changing how well the kidneys actually work. Heavy exercise close to the test can also nudge the level upward.

A normal creatinine test result doesn't always mean that your kidneys are healthy. Sometimes, blood creatinine levels remain in a normal range during the early stages of kidney disease. They rise as the condition of your kidneys becomes more serious.

If your results are abnormal, a single high creatinine test can't diagnose a specific condition. You will likely need to be retested and/or have other tests, too. Ask your provider what your specific blood creatinine level means for your kidney health.

For general wellness information only. Talk to a clinician about your specific results.

Main source: MedlinePlus ↗

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Related biomarkers

Often tested alongside creatinine or part of the same panel.

White Blood Cells (WBC)

Blood

Red Blood Cells (RBC)

Blood

Hemoglobin (Hgb)

Blood

Hematocrit (Hct)

Blood

Platelets (PLT)

Blood

Mean Corpuscular Volume (MCV)

Blood

Sources

Mayo Clinic Laboratories

Labcorp

Quest Diagnostics

RCPA / AACB Australasian Harmonised Reference Intervals

Nordic Reference Interval Project

JSCC / JAMT Japan

NUMBER — Dutch Reference Value Study

Turkey Nationwide Reference Intervals

CALIPER — Canadian Pediatric Reference Intervals

Last updated 2026-05-02

This page aggregates publicly available reference data and clinical information from Mayo Clinic Laboratories and other sources. For general wellness information only — not medical advice. For diagnosis or treatment of any condition, talk to a qualified clinician.

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