The Cpk (Creatine Phosphokinase) normal range varies depending on factors such as sex, age, muscle mass, and the specific laboratory conducting the test. However, general reference ranges are:
- Adult Males: 55-170 U/L
- Adult Females: 30-135 U/L
Important Considerations:
- Laboratory Variations: These ranges are approximate. Always refer to the specific reference range provided by the laboratory that performed your test. Different labs may use different methods and, therefore, have different normal ranges.
- Individual Factors: A slightly elevated or decreased CPK level doesn't always indicate a serious problem. Muscle mass, physical activity, and certain medications can influence CPK levels.
- Consult Your Doctor: It is crucial to discuss your CPK results with your doctor for accurate interpretation in the context of your overall health. They can determine if further investigation is needed.
- Isoenzymes: CPK is made up of different isoenzymes (CPK-MB, CPK-MM, and CPK-BB). Elevated levels of specific isoenzymes can help determine the source of muscle damage (e.g., heart, skeletal muscle, or brain).
Therefore, while the ranges provided give a general idea, your healthcare provider is best suited to interpret your specific results.
