Creatine Kinase (CK / CK‑MB)
Creatine Kinase (CK / CK‑MB) explained
Creatine Kinase (CK / CK‑MB) is a blood test used in the evaluation of Muscle injury evaluation, Cardiac enzyme context (legacy).
Varies by laboratory (LDT/CLIA; not FDA‑approved as a drug)Creatine Kinase (CK / CK‑MB) helps treat
• Muscle injury evaluation
• Cardiac enzyme context (legacy)
• Statin‑associated symptoms workup
additional medications
• Related clinical evaluation and history
• Repeat testing to confirm abnormal results
• Additional targeted labs as recommended
medication risks
• False positives/negatives leading to unnecessary anxiety or missed diagnoses
• Privacy and insurance implications depending on results
• Pre‑analytical variables (fasting, meds) can affect accuracy
side effects
• Bruising or soreness at draw site
• Lightheadedness or fainting (rare)
• Infection at puncture site (very rare)
FAQs
Q: Fasting?A: Not required.
Q: What elevates it?
A: Varies—interpret with symptoms and other tests.
Q: Trends matter?
A: Yes—serial changes help decision‑making.
Q: Medications?
A: Some drugs influence levels; inform your clinician.
Q: Insurance?
A: Covered when indicated.
