Your heart numbers, explained.
Cholesterol is part of the story. Explore what LDL, ApoB, and Lp(a) can tell you, and why a healthcare professional may consider different blood tests.
Explore the visual guide ↓Text description of this 3D model
A short section of artery shown cut open lengthwise. Small gold spheres (cholesterol-carrying particles) float through the channel, and amber lumps along the inner wall represent plaque. Choosing ApoB adds a teal ring to each particle for its one ApoB protein; choosing Lp(a) turns some particles pink with an extra ring for apo(a).
Different tests answer different questions.
Select a blood marker. The fully rotatable 3D illustration and explanation change to help you understand the concept.
LDL-C estimates the amount of cholesterol carried in low-density lipoproteins. It is part of a standard lipid panel.
Go deeper in the Learning Center:
Text description of this 3D model
A short section of artery shown cut open lengthwise. Small gold spheres (cholesterol-carrying particles) float through the channel, and amber lumps along the inner wall represent plaque. Choosing ApoB adds a teal ring to each particle for its one ApoB protein; choosing Lp(a) turns some particles pink with an extra ring for apo(a).
Flip the lab-test cards.
A quick introduction to tests your provider may discuss. Tap any card for more information.
Can LDL-C tell the whole story?
One quick question to help you remember an important takeaway.
Ready to learn more about your heart health?
Browse available heart-health panels or book a standard mobile blood draw if you already have a lab order. Your healthcare professional should help decide which tests are right for you.
Compare Heart PanelsBook a Mobile Blood DrawEach heart-panel price includes the required lab order, standard mobile blood collection, collection supplies, and laboratory testing/processing; only optional upgrades you select (such as the $60 Vein Finder) cost extra. The standard $85 mobile blood draw is a separate service and generally does not include laboratory testing.
Want the full picture first? Explore all six Learning Center lessons or get the free Heart Numbers Guide. The guide is delivered by Stan Store to the email you enter; if it doesn't arrive within a few minutes, check Promotions or Spam.
Questions to take to your clinician
“Which heart-health blood tests make sense for my medical history?” “Would ApoB or Lp(a) add useful information?” “Are there preparation instructions for the tests I am ordering?”
Educational only. This experience does not interpret individual lab reports, diagnose conditions, recommend treatment, or replace a healthcare professional. Do not change medication or fasting instructions based on this guide.
Sources: AHA on ApoB · AHA on Lp(a) · AHA on blood testing.