Getting your cholesterol checked is straightforward: you can ask your primary care doctor to order a blood test called a lipid panel, walk into a lab like Quest Diagnostics without a doctor’s order, or use an at-home test kit. Most adults should have their first test at age 20, then retest every four to six years as long as their risk stays low. Here’s what to expect with each option and how to make sense of your results.
What the Test Measures
A standard cholesterol check is officially called a lipid panel. It measures four things from a single blood draw: total cholesterol, LDL (often called “bad” cholesterol), HDL (“good” cholesterol), and triglycerides, a type of fat that contributes to artery hardening. These four numbers together give a much clearer picture of your cardiovascular risk than any single value would on its own.
Your doctor uses these results alongside other factors like your age, blood pressure, smoking status, and family history to estimate your 10-year risk of a heart attack or stroke. That risk score falls into one of four categories: low (under 5%), borderline (5% to 7.4%), intermediate (7.5% to 19.9%), or high (20% or above). Where you land determines whether lifestyle changes alone are enough or whether medication enters the conversation.
Three Ways to Get Tested
Through Your Doctor
The most common route is asking your doctor for a lipid panel at a routine checkup. They’ll order the blood work, you’ll visit a lab (often in the same building), and results typically come back within a few business days. This is the most reliable method because a venous blood draw analyzed in a certified lab produces the most accurate numbers, and your doctor can interpret the results in context with the rest of your health history.
Direct-to-Consumer Lab Testing
If you don’t have a regular doctor or just want a quick check, companies like Quest Diagnostics let you purchase a cholesterol test online, visit a nearby lab location, and get results without a physician’s order. Processing generally takes a few business days. This is a good option if you want lab-quality accuracy without scheduling a full appointment, though you’ll be interpreting the results on your own unless you follow up with a provider.
At-Home Test Kits
Home cholesterol kits use a finger prick to collect a small blood sample. Some give you a reading in minutes, while others require you to mail the sample to a lab. The FDA recognizes these kits as useful for early detection, but they come with a notable accuracy trade-off. Finger-prick samples tend to read about 2 to 4% higher than a standard lab draw, which can push a borderline-normal result into the “at risk” range and cause unnecessary worry. If a home test shows elevated numbers, it’s worth confirming with a full lab draw before making any decisions.
The FDA also warns against using previously owned test strips or strips not authorized for sale in the U.S., which can produce unreliable results.
Do You Need to Fast?
The CDC recommends fasting for 8 to 12 hours before a cholesterol test, which means no food or drink other than water. Most people schedule a morning blood draw and skip breakfast. Fasting primarily affects the triglyceride reading, since a recent meal can temporarily spike those levels and throw off your results. Your doctor may tell you a non-fasting test is fine for an initial screening, but if triglycerides come back borderline or high, a fasting retest is the next step. Always confirm fasting instructions when you book your appointment.
What Your Results Mean
Cholesterol is measured in milligrams per deciliter (mg/dL). The ideal targets for most adults age 20 and older are:
- Total cholesterol: below 200 mg/dL
- LDL cholesterol: below 100 mg/dL
- Triglycerides: below 150 mg/dL
HDL works in the opposite direction from the others. Higher is better, because HDL helps remove excess cholesterol from your bloodstream. For HDL, most guidelines consider 60 mg/dL or above protective.
These are general benchmarks. Your personal targets may differ depending on your age, weight, blood pressure, race, and family history. An LDL of 110 mg/dL might be perfectly acceptable for a healthy 25-year-old with no other risk factors, while someone with diabetes or a family history of early heart disease might need to aim well below 100. This is where a conversation with a provider adds real value: they can tell you whether your numbers need action or just monitoring.
Triglycerides between 150 and 199 mg/dL are considered borderline high, and anything 200 mg/dL or above is high. Persistently elevated triglycerides (175 mg/dL and up) are treated as an independent risk factor for cardiovascular disease, separate from cholesterol.
What It Costs
Under the Affordable Care Act, cholesterol screening is classified as a preventive service. That means most marketplace health plans and many employer plans cover it at no cost to you, with no copay or coinsurance, even if you haven’t met your deductible. The key requirement is that you use an in-network provider. If you go out of network or use a direct-to-consumer service, you’ll pay out of pocket, typically somewhere between $20 and $70 depending on the test and provider.
How Often to Retest
The American Heart Association recommends testing every four to six years for adults whose risk remains low. If your numbers are borderline or you have risk factors like high blood pressure, diabetes, smoking, obesity, or a family history of heart disease, your doctor will likely want to recheck more frequently, often annually. After starting a cholesterol-lowering medication or making major lifestyle changes, a follow-up test at 4 to 12 weeks helps gauge whether those changes are working.
Children and teenagers with a family history of high cholesterol or early heart disease may also need screening, sometimes as early as age 2. For most kids, a first test between ages 9 and 11 is standard.