--- title: Myeloperoxidase Test type: biomarker url: "https://www.test-well.com/biomarkers/myeloperoxidase" also_known_as: - myeloperoxidase - mpo - myeloperoxidase (mpo) - cardio iq myeloperoxidase (mpo) category: Heart Health units: - pmol/L order_price_usd: 44.99 order_item: Myeloperoxidase (MPO) order_url: "https://www.test-well.com/tests/myeloperoxidase-mpo" reviewed_at: 2026-10-09 --- # Myeloperoxidase > Myeloperoxidase is measured with a standard blood draw; no fasting is needed. A typical reference range is 0.000 – 470 pmol/L. At TestWell it's $44.99 all-in as Myeloperoxidase (MPO), results in 3–5 business days, drawn at Quest. An out-of-range result is a prompt to look closer, not a diagnosis. Also known as: myeloperoxidase, mpo, myeloperoxidase (mpo), cardio iq myeloperoxidase (mpo). ## Key facts | Fact | Value | | --- | --- | | Units | pmol/L | | Sample | Blood draw | | Fasting | Not required | | Results | 3–5 business days | | Price | $44.99 | | Labs | Quest | ## What does Myeloperoxidase measure? An enzyme released by activated white blood cells inside inflamed artery walls. Elevated MPO indicates active vascular inflammation and has been associated with plaque more prone to rupture. ## What is the normal range for Myeloperoxidase? | Population | Reference range | | --- | --- | | age 18+ | 0.000 – 470 pmol/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 Myeloperoxidase mean? Suggests active arterial inflammation; interpreted alongside hs-CRP, ApoB, Lp(a) and lipoprotein particles rather than alone. ## How do you get tested for Myeloperoxidase? | Order | Type | Price | Includes | | --- | --- | --- | --- | | [Myeloperoxidase (MPO)](https://www.test-well.com/tests/myeloperoxidase-mpo) | Single test | $44.99 | This marker | | [Men's Total Body Advanced Panel](https://www.test-well.com/tests/mens-total-body-advanced-panel) | Panel | $999.99 | 65 tests | | [Women's Total Body Advanced Panel](https://www.test-well.com/tests/womens-total-body-advanced-panel) | Panel | $999.99 | 65 tests | ## Quest vs Labcorp vs BioReference | Lab | Available | Price | Notes | | --- | --- | --- | --- | | Quest Diagnostics | Yes | $44.99 | Choose Quest at checkout; walk-in patient service centers in every state TestWell serves outside NY and NJ. | | Labcorp | No | — | Not offered through Labcorp for this test. | | BioReference (NY & NJ) | No | — | Not available in NY/NJ for this test. | ## Common questions about Myeloperoxidase ### Do I need a doctor's order to test my myeloperoxidase? 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 Myeloperoxidase results? Most Myeloperoxidase 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 Myeloperoxidase test cost? Our Myeloperoxidase (MPO) starts at $44.99. 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 Myeloperoxidase test? Fasting is not required for the Myeloperoxidase test. You can have your blood drawn any time of day. ### Which lab will process my Myeloperoxidase 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 - [Cleveland HeartLab — Myeloperoxidase](https://www.clevelandheartlab.com/tests/myeloperoxidase-mpo/) ## Related biomarkers - [Apolipoprotein B](https://www.test-well.com/biomarkers/apolipoprotein-b) - [Lipoprotein(a)](https://www.test-well.com/biomarkers/lipoprotein-a) - [NT-proBNP](https://www.test-well.com/biomarkers/nt-probnp) - [Homocysteine](https://www.test-well.com/biomarkers/homocysteine) - [LDL Particle Number](https://www.test-well.com/biomarkers/ldl-particle-number) - [Small LDL Particle](https://www.test-well.com/biomarkers/small-ldl-particle) - [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 2026-10-09. Review policy: https://www.test-well.com/reviewers/youmna-distefano-md Canonical page: https://www.test-well.com/biomarkers/myeloperoxidase 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.