--- title: "ApoB — Heart Attack Risk Predictor Test" type: test id: apob url: "https://www.test-well.com/tests/apolipoprotein-b" price_usd: 30.99 lab_fee_usd: 6 all_in_usd: 36.99 cpt: 82172 category: Heart Health sample: Blood draw fasting_required: false results_in: "2–4 business days" labs: - Quest - Labcorp - BioReference orderable: true reviewed_at: 2026-09-14 order_url: "https://www.test-well.com/cart?add=apolipoprotein-b&utm_source=ai_agent&utm_medium=markdown" --- # ApoB — Heart Attack Risk Predictor Test > Measures ApoB — considered by many cardiologists to be the single best predictor of cardiovascular risk, measured from a standard blood draw. At TestWell it costs $30.99 plus a $6 lab fee, needs no fasting, and results post in 2–4 business days. Physician-authorized with no doctor's visit or insurance needed; draw at Quest or Labcorp. ## Key facts | Fact | Value | | --- | --- | | Price | $30.99 + $6 lab processing fee per order ($36.99 all-in for this test alone) | | CPT code | 82172 | | Sample | Blood draw | | Fasting | Not required | | Results | 2–4 business days | | Labs | Quest Diagnostics, Labcorp, BioReference (NY & NJ) | | 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 ApoB — Heart Attack Risk Predictor test tell you? Measures ApoB — considered by many cardiologists to be the single best predictor of cardiovascular risk. Apolipoprotein B (ApoB) is the primary protein found on LDL and other atherogenic (artery-clogging) lipoprotein particles. Many cardiologists now consider ApoB to be a better predictor of cardiovascular risk than LDL cholesterol because it directly measures the number of potentially harmful particles in your blood. **Clinical use:** Apolipoprotein B counts the number of atherogenic particles in your blood — many cardiologists consider it the single best predictor of heart-attack risk, ahead of LDL. ## Who should order it? Anyone doing a serious cardiovascular risk workup, people with normal LDL but family history of heart disease, anyone on a longevity protocol or statin therapy. ## Biomarkers measured - [Apolipoprotein B](https://www.test-well.com/biomarkers/apolipoprotein-b) ## Price by lab | Lab | Test price | All-in (with $6 fee) | Notes | | --- | --- | --- | --- | | Quest Diagnostics | $30.99 | $36.99 | Choose at checkout; walk-in patient service centers nationwide (not NY/NJ) | | Labcorp | $39.99 | $45.99 | Choose at checkout; walk-in patient service centers nationwide (not NY/NJ) | | BioReference (NY & NJ) | $31.99 | $37.99 | New York and New Jersey orders route here automatically | 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 ApoB — Heart Attack Risk Predictor test cost? A ApoB — Heart Attack Risk Predictor test costs $30.99 at TestWell — $36.99 all-in when ordered alone, because the $6 lab processing fee is charged once per order, with no draw fee or physician fee added. Ordered directly from the labs' own consumer sites, the same test lists at $69.00 at Labcorp OnDemand (list prices checked Sep 12, 2026). Hospital outpatient labs typically bill around $120.00 self-pay for the same test, and often more. With insurance, what you pay depends on your deductible and your plan's negotiated rate; TestWell's price is fixed before the draw and is HSA/FSA-eligible. | Where you order | Price | One test, all-in | Notes | | --- | --- | --- | --- | | TestWell (drawn at Quest or Labcorp) | $30.99 | $36.99 | Includes the one $6 lab processing fee, charged once per order | | Labcorp OnDemand (Labcorp's own site) | $69.00 | $69.00 | [list price checked 2026-09-12](https://www.ondemand.labcorp.com/lab-tests/apob-test) | | Hospital outpatient lab, self-pay (typical) | $120.00 | $120.00 | Reference figure; hospital charges vary widely by facility and are often higher | Lab test codes: Quest test code 5224 · Labcorp test no. 167015 · BioReference code 0457-2. ## How do you prepare? Fasting is not required but may improve accuracy. No special preparation needed. ## Related conditions - [Cardiovascular disease risk](https://www.test-well.com/conditions/heart-disease-risk) - Familial hypercholesterolemia (E78.01) - Atherosclerosis (I70.90) - Hyperlipidemia (E78.5) ## Common questions about the ApoB — Heart Attack Risk Predictor test ### Why is ApoB better than LDL? LDL measures cholesterol mass; ApoB counts the actual atherogenic particles. Each LDL, VLDL, IDL, and Lp(a) particle carries exactly one ApoB. Two people can have the same LDL but very different particle counts — and particle count drives cardiovascular risk. This is why the European Society of Cardiology now lists ApoB as the preferred risk marker. ### What's a healthy ApoB level? Under 90 mg/dL for low-risk adults, under 80 for those with cardiovascular risk factors (diabetes, hypertension, smoking), under 65-60 for established heart disease per recent expert consensus (Sniderman, Brown, Allan). Optimal for longevity: under 80. ### What's a normal ApoB-to-LDL ratio? ApoB (mg/dL) / LDL (mg/dL) of about 0.8 means typical particle size. Higher ratio (>0.9) means smaller, denser, more atherogenic particles — even at the same LDL. People on low-carb diets sometimes have normal LDL but elevated ApoB; the ratio catches this. ### How much does an ApoB test cost without insurance? On TestWell, ApoB is $30.99. Quest Direct lists the same test at $45, walk-in hospital labs typically bill $100-120 without insurance. Same CLIA-certified labs, same biomarker — TestWell just removes the markup. ### What is the CPT code for an ApoB test? The CPT code for Apolipoprotein B is 82172. Often ordered alongside ApoA1 (also 82172) and Lp(a) (83695) in a complete cardio risk panel. ### Do I need to fast for an ApoB test? Yes — 9-12 hour fast (water only). Unlike LDL, ApoB is less affected by recent meals, but most clinicians still recommend fasting since it's usually drawn alongside a [lipid panel](https://www.test-well.com/tests/lipid-panel) and triglycerides. ### Should I add ApoB to my standard lipid panel? Yes if you're serious about heart risk assessment. The [Heart Health Panel](https://www.test-well.com/tests/heart-health-panel) bundles ApoB + [Lipid Panel](https://www.test-well.com/tests/lipid-panel) + [hs-CRP](https://www.test-well.com/tests/hs-crp) + [Lp(a)](https://www.test-well.com/tests/lipoprotein-a) at a discount. ApoB plus Lp(a) covers >95% of genetic cardiovascular risk. ## How to order 1. Add to cart: https://www.test-well.com/cart?add=apolipoprotein-b&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, Labcorp, BioReference (NY & NJ) patient service center — no appointment needed at most sites. 5. Results post to your TestWell portal in 2–4 business days with reference ranges and flags. ## Related - [Advanced Heart Health Blood Tests: Beyond Cholesterol](https://www.test-well.com/guides/advanced-heart-health-blood-tests) - [Heart Health Panel](https://www.test-well.com/tests/heart-health-panel) — 5 tests · $99.99 - [Longevity & Anti-Aging Panel](https://www.test-well.com/tests/longevity-panel) — 13 tests · $239.99 - [General Wellness Advanced Panel](https://www.test-well.com/tests/whole-body-essentials-panel) — 14 tests · $209.99 - [Advanced Cholesterol Particle Test (NMR)](https://www.test-well.com/tests/nmr-lipoprofile) — $70.99 - [ApoE Genotype (Cardiovascular Risk)](https://www.test-well.com/tests/apoe-genotype-cardio) — $133.99 - [Fibrinogen Activity](https://www.test-well.com/tests/fibrinogen-test) — $22.99 - [Homocysteine](https://www.test-well.com/tests/homocysteine) — $27.99 - [Lp(a) Hereditary Heart Risk Test](https://www.test-well.com/tests/lipoprotein-a) — $34.99 - [All Heart Health tests](https://www.test-well.com/tests/category/heart-health) - [Full test directory](https://www.test-well.com/tests/directory) --- Medically reviewed by Youmna DiStefano, MD (Medical Reviewer, TestWell); last reviewed 2026-09-14. Review policy: https://www.test-well.com/reviewers/youmna-distefano-md Canonical page: https://www.test-well.com/tests/apolipoprotein-b 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.