Creatine Phosphokinase (CPK) normal range — check your value

Roughly 30 to 200 U/L, with wide variation by muscle mass and recent activity.

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Your Creatine Phosphokinase (CPK) test value

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Creatine Phosphokinase (CPK)

U/L

What Creatine Phosphokinase (CPK) measures

An enzyme released from muscle when it is damaged, from heavy exercise through to serious muscle breakdown.

Creatine Phosphokinase (CPK) normal range chart

ResultCreatine Phosphokinase (CPK) (U/L)

Below rangeBelow 34

In range34 – 145

Above range145 and above

These bands are for female, 31–45 years. Enter your age and gender above to see the bands for you. The table below shows the range for every age and gender.

Creatine Phosphokinase (CPK) normal range by age and gender

AgeMaleFemale

0–1 years60 – 305 U/L60 – 305 U/L

2–6 years30 – 200 U/L29 – 168 U/L

7–11 years46 – 171 U/L34 – 145 U/L

12–17 years46 – 171 U/L34 – 145 U/L

18–30 years46 – 171 U/L34 – 145 U/L

31–45 years46 – 171 U/L34 – 145 U/L

46–60 years46 – 171 U/L34 – 145 U/L

60 years and above46 – 171 U/L34 – 145 U/L

What a high Creatine Phosphokinase (CPK) means, and common causes

An enzyme released when muscle is damaged. Most high results come from exercise rather than disease.

Common causes: Strenuous or unaccustomed exercise, intramuscular injections, statin medicines, hypothyroidism, muscle disorders, and rhabdomyolysis after crush injury or severe exertion.

What a low Creatine Phosphokinase (CPK) means, and common causes

A low CPK is not clinically significant.

Common causes: Low muscle mass and prolonged bed rest.

Frequently asked questions

Roughly 30 to 200 U/L, with wide variation by muscle mass and recent activity.

Yes, substantially. A hard session in the preceding days can multiply the value. Repeating after a week of rest usually clarifies it.

Agar aapne gym kiya hai to ek hafte aaram ke baad dobara test karein. Peshab gehra ho aur maspeshiyon mein tez dard ho to turant doctor se milein.

Please note. This page explains what a number means against reference ranges for your age and gender. It does not diagnose anything, cannot see the rest of your report, and is no substitute for a doctor. If your lab’s printed range differs, your lab’s range applies.