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Creatine Kinase Testing (CK)

The Creatine Kinase test is also known as a Creatine Phosphokinase (CPK) test.

All you need to know about testing Creatine Kinase levels with a laboratory test

  • What is the Creatine Kinase test for?
  • What is a Creatine Kinase test?
  • What conditions can the Creatine Kinase test help diagnose?
  • What symptoms might warrant a Creatine Kinase test?
  • How does the CK test work?
  • How do I use the CK test kit?
  • How do I interpret the results of the CK test?
  • What should I do if the results are positive?
  • What should I do if the results are negative?
  • What is the next step after I receive my test results?

What Is The Creatine Kinase Test For?

Conditions linked to Creatine Kinase

Heart attack

Heart attack

A heart attack occurs when the blood supply to part of the heart muscle is suddenly blocked, requiring immediate emergency treatment.

How To Test Creatine Kinase

By buying a laboratory test kit with professional nurse or clinic collection, you can accurately measure Creatine Kinase for total reassurance.

Professional analysis in an accredited laboratory ensures rapid result delivery.

Tests which include a Creatine Kinase test:

Who Should Take This Test?

Measure your Creatine Kinase levels and with a nurse or clinic test kit

You get the convenient testing with the reassurance of professional clinical analysis. Your results are delivered quickly & securely online.

This Test is advised if you:

  • want the convenience of home testing without waiting for a GP appointment;
  • need a high quality, clinically accredited test done in a professional clinical laboratory.

What is a Creatine Kinase test?

A Creatine Kinase (CK) test, also known as Creatine Phosphokinase (CPK) test, is a blood test used to measure the level of Creatine Kinase enzyme in your blood. High levels of this enzyme can indicate damage or stress to muscle tissue including the heart.

What conditions can the Creatine Kinase test help diagnose?

A Creatine Kinase test can help diagnose conditions that cause muscle damage. These include myocardial infarction, muscular dystrophy, severe muscle breakdown (rhabdomyolysis), inflammation of the muscles (myositis), and disorders of the brain.

What symptoms might warrant a Creatine Kinase test?

If you're experiencing symptoms like chest pain, muscle weakness, fatigue, dark urine or unexplained weight loss, a healthcare provider may recommend a Creatine Kinase test.

How does the CK test work?

The CK test works by measuring the amount of Creatine Kinase in your blood. High levels can indicate muscle damage. A larger amount of Creatine Kinase in the blood correlates to the extent of the damage experienced by the muscles.

How do I use the CK test kit?

Our CK test kit is easy to use. It involves a simple finger-prick to collect a small blood sample. You then place the sample in the enclosed sample tube, ensure it is securely sealed and send it back using the pre-paid envelope.

How do I interpret the results of the CK test?

A higher than normal level of CK could imply muscle damage, while a lower than normal level of CK could reflect low muscular mass or inactivity. However, test results can be influenced by various factors, and it is best to discuss the results with a healthcare provider.

What should I do if the results are positive?

A positive result, indicating high levels of CK in your blood, could suggest muscle damage. It's important to consult your healthcare provider who can discuss possible causes and treatment options.

What should I do if the results are negative?

A negative result suggests that your CK levels are within the normal range. However, if you continue to experience symptoms, it's always advisable to consult with a healthcare provider.

What is the next step after I receive my test results?

After receiving your test results, you should discuss them with a healthcare provider who can explain what they mean in the context of your overall health and symptoms, and help devise an appropriate treatment plan if necessary.

Clinical review

Doctors, Scientists & Experts Delivering Private Blood Testing Online

Dr. Shahzaib Ahmad MBBS, BSc, MRCP, FRCA, FFICM

Clinical Supervisor - Vitall|GMC 7495062|Profile

Dr Shahzaib Ahmad is a Consultant in Intensive Care Medicine with subspecialty experience in cardiac critical care and neurocritical care. He has extensive experience managing complex acute and cardiovascular conditions in hospital intensive care settings. Dr Ahmad supports Vitall in reviewing health content for clinical accuracy and alignment with current medical practice.

Reviewed on 30/12/2025

Next review due 30/12/2026

Review focus: Blood biomarkers, laboratory testing methodology, and biochemical interpretation.

This content has been reviewed for medical and scientific accuracy but does not replace advice from a qualified healthcare professional.
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