How reports print it
CREACreatCreКреатинин в сывороткеКреатинин в крови
What it shows
A by-product of muscle metabolism cleared by the kidneys. Creatinine is used to assess kidney function and to calculate eGFR.
Units and conversion
Base unit: µmol/L.
- 1 mg/dL = 88.4 µmol/L · 1 µmol/L = 0.01131 mg/dL
Typical ranges
Your laboratory’s range comes first — it is printed on the report next to the result. Below is one laboratory’s adult range with its method: a reference, not a rule.
| Who | Range, µmol/L |
|---|---|
| Men | 62–106 |
| Women | 44–80 |
Range source: Лаборатория Хеликс — Креатинин в сыворотке
Good to know
Ranges depend on the method: Helix (Jaffe) gives 44–80 µmol/L for women and 62–106 for men, Invitro (enzymatic) 49–90 and 64–104.
Why it can be higher
Common reasons discussed with a doctor. This is not a diagnosis.
- Large muscle mass
- A meat-rich meal and hard training the day before
- Dehydration
- Some medicines
- Reduced kidney function
Why it can be lower
- Small muscle mass
- Pregnancy
- A vegetarian diet
What to ask a doctor
- What is my eGFR, and which equation is used?
- Is a urine albumin test needed?
Whom to see
A GP or internist; then a nephrologist.