Health Tests · Labcorp OnDemand
ApoB Test, $69
$69 · no doctor visit needed
- Order online, walk into 2,000+ locations — no appointment
- Physician order included — no doctor visit required
- Results in your portal in days
Same certified lab your doctor uses. HSA/FSA accepted.
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Order online for $69, then walk into any of 2,000+ locations — no doctor's visit needed. One protein, counted on the particles that carry cholesterol — with results in 1–2 days, and the honest limits on what it can tell you.
The short version
$69, one walk-in visit, results in 1–2 days
The Apolipoprotein B (ApoB) Test ($69) counts the protein that rides on LDL and other cholesterol-carrying particles — one number for how many of those particles are in your blood, rather than how much cholesterol they hold. Order online, walk in for the draw, results in 1–2 days. It is a risk marker, not a diagnosis: it says your particle count is high or normal, not whether you have heart disease.
Shopping links on this page go directly to Labcorp OnDemand. We don't earn a commission on orders.
Price
| Test | Price | |
|---|---|---|
| Apolipoprotein B (ApoB) Test | $69 | Order now → |
Prices checked Nov 11, 2026. HSA/FSA eligible. Self-pay; insurance not billed.
What ApoB measures — and why particle count beats cholesterol alone
Apolipoprotein B is the major protein on LDL particles, the lipoproteins that carry cholesterol and lipids through the blood. Every cholesterol-carrying particle that can lodge in an artery wall carries exactly one ApoB molecule, so counting ApoB counts the particles themselves — while a standard cholesterol test measures how much cholesterol those particles happen to hold. Elevated ApoB levels are associated with increased risk of cardiovascular disease, even when traditional cholesterol levels appear normal. Researchers have found that measuring ApoB may predict cardiovascular risk better than the standard lipid panel in some individuals, especially those with metabolic syndrome or diabetes, whose LDL particles tend to be denser and smaller. The test is not intended to diagnose cardiovascular disease or type 2 diabetes — it measures a risk marker, and the number needs a clinician to read it against the rest of your health.
Who should consider it — and who should skip it
This test fits adults who want a more complete assessment of cardiovascular risk, especially those with a family history of heart disease, high cholesterol, or other risk factors — and people already changing diet, exercise, or weight who want a number that moves with the change. It is the wrong purchase if you already have diagnosed heart disease: then your testing should run through your clinician, who can order the right markers and read them against your history. And if your standard lipid panel is already normal, you have no family history, and no other risk factors, it is a low-yield purchase — ApoB earns its keep when there is a reason to look past the cholesterol number, not as a general wellness sweep.
Reading the number: what high ApoB means — and its honest limits
Your report prints your result against the lab’s own reference range — read the number there, not against a figure from the internet. The direction is what matters: higher ApoB generally indicates a higher risk of cardiovascular disease, because more cholesterol-carrying particles means more opportunity for plaque to build. But the number is a probability, not a verdict. It does not say you have heart disease, it does not say when anything will happen, and it cannot separate the causes — genetics, diet, weight, insulin resistance, and thyroid function all push it around. A high result is a prompt to talk to a clinician about the full picture — blood pressure, the rest of the lipid panel, blood sugar, smoking, and family history — not a reason to order a supplement or overhaul your diet from one number.
An elevated result means your particle count sits above the reference range, which is associated with higher cardiovascular risk — it does not diagnose heart disease. Abnormal results deserve follow-up with your healthcare provider, who reads them against your history and decides what, if anything, changes.
ApoB vs a standard cholesterol test: count vs amount
Both tests draw the same blood, but they answer different questions. A standard cholesterol test measures the amount of cholesterol in your blood — LDL, HDL, triglycerides. The ApoB test measures the number of potentially harmful lipoprotein particles, because each one carries a single ApoB molecule. Two people can have the same LDL cholesterol with very different particle counts: one carries it in a few large particles, the other in many small dense ones, and the many-small pattern carries more risk. That is why ApoB can add information a lipid panel misses — and also why it does not replace the panel. Cholesterol, blood pressure, blood sugar, and smoking history all feed the same risk picture, and no single marker carries it alone.
How walk-in ApoB testing works
You order the test online, then visit a patient service center for a standard venous blood draw — no doctor’s order, no appointment, and no insurance needed. Results typically post to a secure portal 1–2 days after your sample arrives at the lab. HSA/FSA accepted. Testing is performed in a CLIA-certified clinical laboratory. The test must be taken by the purchaser, and it is available to adults 18 to 100. One prep wrinkle worth knowing: the product page’s Test Details say no special preparation is needed, but its own FAQ says to fast for 12–14 hours before the draw — follow the fast (water only), since ApoB travels with the lipids and a fed draw muddies the comparison. A 20% off promo code is currently running — check the product page for the current price before ordering.
Common questions
Do I need to fast before an ApoB test?
The product page gives two answers: its Test Details say no special preparation is needed, while its FAQ says to fast for 12–14 hours before the sample collection (no food or drink, except water). Follow the fast — ApoB is measured on the particles that carry cholesterol, and a fed draw is read against a different baseline.
What is ApoB?
Apolipoprotein B is the major protein on LDL particles, the lipoproteins that carry cholesterol and lipids through the blood. An ApoB test measures the amount of that protein in your blood — and because each cholesterol-carrying particle carries exactly one ApoB molecule, the count is effectively a count of those particles.
Is ApoB better than LDL cholesterol?
For some people, yes — researchers have found ApoB may predict cardiovascular risk better than the standard lipid panel, especially for people with metabolic syndrome or diabetes, whose LDL particles tend to be denser and smaller. For many others the two agree, and ApoB does not replace the lipid panel, blood pressure, or blood sugar in the overall risk picture.
What causes high ApoB?
An excess of low-density lipoprotein particles, which carry cholesterol through the bloodstream. That can come from genetic factors, diets high in saturated fats and sugars, obesity, insulin resistance, or conditions such as hypothyroidism. Your clinician will want to know which of these apply before deciding what a high result means.
Can this test diagnose heart disease?
No. The test is not intended to diagnose cardiovascular disease or type 2 diabetes. It measures a risk marker — an elevated level is associated with increased risk — and the result should be interpreted by a healthcare professional in the context of your overall health and other risk factors.
How can I lower ApoB?
Lifestyle changes such as a heart-healthy diet, regular exercise, and weight management can positively affect ApoB levels. Measuring ApoB can help you and your healthcare provider assess whether those changes are working. What specifically to change, and whether medication belongs in the picture, is a clinician conversation, not a test result.
Is this a home test kit?
No. This is an in-person blood draw at a patient service center — you order online, then walk in for the sample collection. Your results arrive through a secure online portal, typically 1–2 days after your sample reaches the lab.
Ready to order?
Get your ApoB number this week
Order the ApoB Test for $69 and walk in this week — no doctor visit required.