Cholesterol Screening Guidelines

Life stage	Recommended timing	Planning use
Children and teens	Begin testing between ages 9 and 11, then repeat every five years; screening may begin as early as age 2 when there is a family history	Raise family history at a child’s check-up so the first test is not left to the routine schedule.
Young adults	The American Heart Association recommends a first check around age 20; NHLBI advises repeating every five years	Book the first panel at about age 20 and set a repeat reminder.
Women 55 and older	Screened every one to two years	Move from long gaps to a regular, shorter schedule.
Everyone by 65	Yearly cholesterol tests	Treat the test as an annual habit alongside other check-ups.

These timings are the NHLBI and American Heart Association recommendations as summarised by Testing.com and South Coast Health.

How often should you get cholesterol checked? About every 4–6 years for most adults, more often from age 55 for women, yearly by 65, and whenever risk factors or a diagnosis call for it.

The timeline below follows that schedule from childhood onward, then explains how to prepare for the test and read each line of the result. For the wider picture of what to schedule and when, see our guide to preventive health screenings by age. Cholesterol sits alongside other routine checks, such as how often should adults get blood pressure checked.

Childhood and the teenage years

Cholesterol testing can start well before adulthood. NHLBI guidance, as reported by Testing.com, recommends beginning between ages 9 and 11 and repeating every five years. Where a family history of high cholesterol exists, screening may begin as early as age 2.

This is a lighter schedule than the adult one. UChicago Medicine AdventHealth notes that children generally only need to have their levels checked once or twice before they are 18 years old.

1. Ask about family history first. It is the one factor that moves a child’s first test earlier than the standard window.
2. Do the routine test in the 9–11 window. Parents who have no family history to flag can simply ask for it at a check-up in that age range.
3. Keep the result. It becomes the baseline an adult clinician compares against later.

Young adulthood: the first adult panel

The American Heart Association recommends that young adults have their cholesterol checked when they are barely out of their teens, which South Coast Health puts at age 20. The same source says NHLBI screenings should be repeated every five years.

A five-year rhythm sits inside the broader advice from UChicago Medicine AdventHealth that all adults should check their cholesterol regularly, ideally about every 4–6 years. CVS MinuteClinic states the baseline plainly: all adults should have their cholesterol screened.

This long interval suits adults with normal results and no risk factors. If a result comes back borderline or high, or a condition from the risk section below applies, do not wait for the next five-year mark.

Midlife and later years: shorter gaps

Testing frequency rises with age. South Coast Health says women aged 55 and older should be screened every one to two years, and that by age 65 everyone should have yearly cholesterol tests.

The practical effect is a shift from a test you might forget for years to one that fits an annual routine. Pairing the draw with an existing yearly appointment is the simplest way to keep to it.

Preparing for the test: fasting or not

Most people do not need to fast before a cholesterol test. Harvard Health reports that LDL values were only about 4 mg/dL higher when people were not fasting, a small enough difference that a nonfasting sample is usually fine for routine screening.

There is one clear exception. Harvard Health advises that anyone who has ever had a high triglyceride level should always fast before a lipid test. Triglycerides above 150 mg/dL on a fasting test are linked to a higher risk of heart attack, so a fasting sample gives the cleaner reading for that group.

When fasting is requested, the instruction is water only. UChicago Medicine AdventHealth says nothing but water for 9–12 hours, while CVS MinuteClinic says no food or drinks except water for 8 to 12 hours. The ranges overlap, so follow the number on your own lab order.

1. Check your history. If you have ever had high triglycerides, plan to fast.
2. Read the order or appointment note. If it asks for fasting, count back from the appointment time and stop eating then.
3. Drink water. It is allowed during a fast.
4. Book a morning slot if fasting. It keeps the waiting period shorter.

Reading a lipid panel line by line

A lipid panel is the comprehensive cholesterol test, also called a lipid profile, and CVS MinuteClinic describes it as giving a set of results. Each line measures a different blood fat, so a single “cholesterol number” rarely tells the whole story.

• Total cholesterol. UChicago Medicine AdventHealth defines it as a measure of the total amount of cholesterol in your blood.
• LDL cholesterol. Often called the “bad” cholesterol, it is the line most results discussions centre on, and it has the standard categories in the table below.
• HDL cholesterol. This is the helpful counterpart: HDL helps remove cholesterol from your arteries.
• Triglycerides. A different form of fat in the blood that can raise heart disease risk, especially in women. On a fasting test, a level above 150 mg/dL is linked to a higher risk of heart attack, according to Harvard Health.
• Non-HDL cholesterol. Where a report lists it, this number is your total cholesterol minus your HDL.

LDL categories for adults

LDL result	Category	Planning use
Less than 100 mg/dL	Optimal	Stay on your regular testing interval.
100–129 mg/dL	Near optimal or above optimal	Mention it at your next routine visit.
130–159 mg/dL	Borderline high	Raise it with a clinician rather than waiting for a long gap.
160–189 mg/dL	High	Arrange a conversation about next steps.
190 mg/dL and above	Very high	Do not wait for the next routine check before discussing it.

These LDL categories are published by UChicago Medicine AdventHealth.

Total cholesterol, HDL and triglyceride cut-offs vary by lab, and each report prints its own reference range beside the line. Compare your numbers with the range on your report and go through any flagged line with the clinician who ordered the test.

When to test earlier or more often

A normal interval assumes no complicating factors. Some conditions raise cholesterol, and Testing.com lists chronic kidney disease, diabetes, HIV/AIDS, hypothyroidism and lupus. If one of these applies, ask whether the standard interval is right for you.

Diabetes is the one most readers will want to follow up, and our guide on who should be screened for type 2 diabetes covers that side of the picture.

• A family history. It can move a child’s first screening as early as age 2.
• A diagnosis of high cholesterol. CVS MinuteClinic advises that anyone diagnosed should regularly check their levels, which means a recheck schedule from your clinician, not the five-year default.
• A past high triglyceride result. This changes how you prepare, as covered in the fasting section above.
• Medicines that can raise cholesterol. The same Testing.com page notes that some treatments for acne, cancer and high blood pressure can do so.

After the result: what comes next

High cholesterol matters because it can increase the risk of heart disease and stroke, as CVS MinuteClinic explains. A borderline or high result is a prompt for a clinical conversation, not a verdict.

Where LDL needs to come down, prescription medicines called statins may also help lower your LDL cholesterol, according to South Coast Health. Whether a statin is appropriate depends on your overall risk and is a decision for you and your clinician.

Frequently asked questions

Do men and women have different cholesterol levels?

Yes. UChicago Medicine AdventHealth says men tend to have higher cholesterol than women throughout their lives, although triglycerides can raise heart disease risk especially in women.

Can my medication change a cholesterol result?

It can. Testing.com notes that medications used for conditions such as acne, cancer and high blood pressure can raise cholesterol, so tell the clinician what you take before reviewing your result.

Is a lipid profile the same as a lipid panel?

Yes. Both names describe the same comprehensive cholesterol test, which reports total cholesterol, LDL, HDL and triglycerides.

Is a nonfasting result still worth acting on?

Generally yes. Harvard Health says nonfasting LDL values run only about 4 mg/dL higher, so a nonfasting sample is a reasonable basis for routine decisions unless you have a history of high triglycerides.