--- title: Creatine Kinase Test type: biomarker url: "https://www.test-well.com/biomarkers/creatine-kinase" also_known_as: - creatine kinase - creatine kinase (ck) - ck - cpk category: Metabolic Health units: - U/L - IU/L order_price_usd: 18.99 order_item: Creatine Kinase (CK) order_url: "https://www.test-well.com/tests/creatine-kinase-test" reviewed_at: 2026-09-05 --- # Creatine Kinase > Creatine Kinase is measured with a standard blood draw; no fasting is needed. A typical reference range is 39.0 – 308 U/L (male, age 18+; more bands below). At TestWell it's $18.99 all-in as Creatine Kinase (CK), results in 1–3 business days, drawn at Quest or Labcorp. An out-of-range result is a prompt to look closer, not a diagnosis. Also known as: creatine kinase, creatine kinase (ck), ck, cpk. ## Key facts | Fact | Value | | --- | --- | | Units | U/L / IU/L | | Sample | Blood draw | | Fasting | Not required | | Results | 1–3 business days | | Price | $18.99 | | Labs | Quest or Labcorp | ## What does Creatine Kinase measure? An enzyme released when muscle is damaged — skeletal, cardiac, or smooth muscle. ## What is the normal range for Creatine Kinase? | Population | Reference range | | --- | --- | | Male, age 18+ | 39.0 – 308 U/L | | Female, age 18+ | 26.0 – 192 U/L | Reference intervals differ slightly between labs; the range printed on your report is the one to interpret against. Ranges are usually set so 95% of healthy people fall inside them. ## What does a high Creatine Kinase mean? Often reflects intense exercise, muscle injury, certain medications (statins), or cardiac events. ## How do you get tested for Creatine Kinase? | Order | Type | Price | Includes | | --- | --- | --- | --- | | [Creatine Kinase (CK)](https://www.test-well.com/tests/creatine-kinase-test) | Single test | $18.99 | This marker | | [Fitness & Performance Panel](https://www.test-well.com/tests/fitness-performance-panel) | Panel | $119.99 | 8 tests | | [Total Body Panel](https://www.test-well.com/tests/total-body-panel) | Panel | $499.99 | 49 tests | ## Quest vs Labcorp vs BioReference | Lab | Available | Price | Notes | | --- | --- | --- | --- | | Quest Diagnostics | Yes | $18.99 | Choose Quest at checkout; walk-in patient service centers in every state TestWell serves outside NY and NJ. | | Labcorp | Yes | $18.99 | Choose Labcorp at checkout; walk-in patient service centers in every state TestWell serves outside NY and NJ. | | BioReference (NY & NJ) | No | — | Not available in NY/NJ for this test. | - [What a high Creatine Kinase means (causes, symptoms, next steps)](https://www.test-well.com/biomarkers/creatine-kinase/high) ## Common questions about Creatine Kinase ### Do I need a doctor's order to test my creatine kinase? No. TestWell's licensed physician network reviews and approves your order — usually within minutes. You can place an order online without an in-person visit or a referral from your own doctor. ### How long does it take to get Creatine Kinase results? Most Creatine Kinase results are available in 1–3 business days after your specimen arrives at the lab. You'll get an email the moment your results are ready, with everything viewable in your TestWell portal. ### How much does a Creatine Kinase test cost? Our Creatine Kinase (CK) starts at $18.99. That's the all-in price — no copays, no insurance hoops, no surprise bills. HSA and FSA cards are accepted. ### Do I need to fast before my Creatine Kinase test? Fasting is not required for the Creatine Kinase test. You can have your blood drawn any time of day. ### Which lab will process my Creatine Kinase test? Your test will be processed by Quest Diagnostics, Labcorp, or BioReference depending on which is closest to you and which lab carries the test. All three are CLIA-certified and trusted by hospitals nationwide. You'll choose your lab during checkout from 4,000+ locations. ## Sources - [Mayo Clinic Labs](https://www.mayocliniclabs.com/test-catalog/overview/8336) - [MedlinePlus (NIH) — Creatine Kinase](https://medlineplus.gov/lab-tests/creatine-kinase/) ## Related biomarkers - [Glucose](https://www.test-well.com/biomarkers/glucose) - [Creatinine](https://www.test-well.com/biomarkers/creatinine) - [eGFR](https://www.test-well.com/biomarkers/egfr) - [BUN](https://www.test-well.com/biomarkers/bun) - [ALT](https://www.test-well.com/biomarkers/alt) - [AST](https://www.test-well.com/biomarkers/ast) - [Reference range lookup tool](https://www.test-well.com/tools/reference-range-lookup) - [Lab unit converter](https://www.test-well.com/tools/lab-unit-converter) - [All biomarkers](https://www.test-well.com/biomarkers) --- Medically reviewed by Youmna DiStefano, MD (Medical Reviewer, TestWell); last reviewed 2026-09-05. Review policy: https://www.test-well.com/reviewers/youmna-distefano-md Canonical page: https://www.test-well.com/biomarkers/creatine-kinase Machine-readable catalog: https://www.test-well.com/api/catalog.json · MCP server: https://www.test-well.com/mcp · Overview for agents: https://www.test-well.com/llms.txt Prices are cash-pay, in USD, and include physician authorization; every order adds one flat $6 lab processing fee. Educational content is not a diagnosis — discuss results with a clinician.