--- title: Myeloperoxidase (MPO) Test type: test id: mpo url: "https://www.test-well.com/tests/myeloperoxidase-mpo" price_usd: 44.99 lab_fee_usd: 6 all_in_usd: 50.99 category: Heart Health sample: Blood draw fasting_required: false results_in: "3–5 business days" labs: - Quest orderable: true order_url: "https://www.test-well.com/cart?add=myeloperoxidase-mpo&utm_source=ai_agent&utm_medium=markdown" --- # Myeloperoxidase (MPO) Test > An enzyme released by white blood cells inside inflamed arteries — an early marker of unstable plaque, independent of cholesterol, measured from a standard blood draw. At TestWell it costs $44.99 plus a $6 lab processing fee, needs no fasting, and results post in 3–5 business days. Physician-authorized with no doctor's visit or insurance needed; draw at Quest. **On your lab requisition:** Quest "Cardio IQ Myeloperoxidase (MPO)" (test code 92814) ## Key facts | Fact | Value | | --- | --- | | Price | $44.99 + $6 lab processing fee per order ($50.99 all-in for this test alone) | | Sample | Blood draw | | Fasting | Not required | | Results | 3–5 business days | | Labs | Quest Diagnostics | | Biomarkers measured | 1 | | Physician authorization | Included — no doctor's visit, referral or insurance needed | | Payment | Card, HSA or FSA; cash-pay only (no insurance billing) | ## What does the Myeloperoxidase (MPO) test tell you? An enzyme released by white blood cells inside inflamed arteries — an early marker of unstable plaque, independent of cholesterol. Myeloperoxidase is an enzyme secreted by activated white blood cells in the artery wall. Elevated blood MPO signals active vascular inflammation and has been associated with plaque that is more likely to rupture, which is why it is used as a complement to hs-CRP and lipid markers rather than a replacement for them. It is most useful for people with a family history of early heart disease, borderline cholesterol, or metabolic risk factors who want a view of arterial inflammation beyond cholesterol numbers. Results are interpreted alongside hs-CRP, ApoB, Lp(a) and lipoprotein particle testing. ## Biomarkers measured - [Myeloperoxidase](https://www.test-well.com/biomarkers/myeloperoxidase) ## Price by lab | Lab | Test price | All-in (with $6 fee) | Notes | | --- | --- | --- | --- | | Quest Diagnostics | $44.99 | $50.99 | Choose at checkout; walk-in patient service centers nationwide (not NY/NJ) | Rhode Island is not served. Prices are identical online and in the lab; no draw fee or physician fee is added. ## How much does a Myeloperoxidase (MPO) test cost? A Myeloperoxidase (MPO) test costs $44.99 at TestWell — $50.99 all-in, since the $6 lab processing fee is charged once per order and there is no draw or physician fee. Hospital outpatient labs typically bill around $180.00 self-pay. With insurance you pay your plan's negotiated rate against your deductible; TestWell's price is fixed before the draw and HSA/FSA-eligible. | Where you order | Price | One test, all-in | Notes | | --- | --- | --- | --- | | TestWell (drawn at Quest) | $44.99 | $50.99 | Includes the one $6 lab processing fee, charged once per order | | Hospital outpatient lab, self-pay (typical) | $180.00 | $180.00 | Reference figure; hospital charges vary widely by facility and are often higher | Lab test codes: Quest test code 92814. ## How do you prepare? No fasting required. ## Common questions about the Myeloperoxidase (MPO) test ### How long does it take to get Myeloperoxidase (MPO) test results? Myeloperoxidase (MPO) test results are typically ready in 3–5 business days after your draw at Quest. TestWell emails you the moment they post, and your results dashboard shows each marker against its reference range with a plain-English explanation. ### Do I need to fast, or can I eat before a Myeloperoxidase (MPO) test? No, fasting is not required for a Myeloperoxidase (MPO) test — you can eat normally and book any time of day. ### Where can I get a Myeloperoxidase (MPO) test near me without a doctor? Order the Myeloperoxidase (MPO) test online from TestWell for $44.99 (plus a $6 per-order lab processing fee) — no doctor's visit, referral or insurance needed. A licensed physician authorizes the order, then you walk into any Quest patient service center near you for the draw (the lab locator on our site lists the closest ones by ZIP code), and results arrive in 3–5 business days. ### What is the Quest test code for a Myeloperoxidase (MPO) test? The Myeloperoxidase (MPO) test is Quest Diagnostics test code 92814 ("Cardio IQ Myeloperoxidase (MPO)"). TestWell orders it under that code for $44.99 at Quest — no doctor's visit or insurance required, results in 3–5 business days. Codes verified against the labs' catalogs in 2026. ## How to order 1. Add to cart: https://www.test-well.com/cart?add=myeloperoxidase-mpo&utm_source=ai_agent&utm_medium=markdown 2. Create an account or sign in, confirm your state and preferred lab, pay by card, HSA or FSA. 3. A licensed physician authorizes the order (usually within minutes); the requisition arrives by email. 4. Walk into any Quest Diagnostics patient service center — no appointment needed at most sites. 5. Results post to your TestWell portal in 3–5 business days with reference ranges and flags. ## Related - [Men's Total Body Advanced Panel](https://www.test-well.com/tests/mens-total-body-advanced-panel) — 65 tests · $999.99 - [Women's Total Body Advanced Panel](https://www.test-well.com/tests/womens-total-body-advanced-panel) — 65 tests · $999.99 - [Advanced Cholesterol Particle Test (NMR)](https://www.test-well.com/tests/nmr-lipoprofile) — $70.99 - [ApoB — Heart Attack Risk Predictor](https://www.test-well.com/tests/apolipoprotein-b) — $30.99 - [ApoE Genotype (Cardiovascular Risk)](https://www.test-well.com/tests/apoe-genotype-cardio) — $133.99 - [Apolipoprotein A-1 (ApoA-1)](https://www.test-well.com/tests/apolipoprotein-a1) — $29.99 - [Fibrinogen Activity](https://www.test-well.com/tests/fibrinogen-test) — $22.99 - [All Heart Health tests](https://www.test-well.com/tests/category/heart-health) - [Full test directory](https://www.test-well.com/tests/directory) --- Canonical page: https://www.test-well.com/tests/myeloperoxidase-mpo 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.