Nursing care
Cholesterol Panel: reading the number and acting on it
Written and reviewed by Dana Whitfield, RN, MSN · 4 min read · Updated September 2026
Short answer
A cholesterol panel measures total cholesterol, LDL, HDL, and triglycerides, and the two numbers that matter most move in opposite directions: LDL should be lowered and HDL should be raised. Most patients assume all cholesterol is bad, which leads them to misread a low HDL as a good result rather than a risk factor.
Why this value is ordered
A lipid panel is ordered as routine cardiovascular risk screening, typically starting in adulthood and repeated every 4 to 6 years in low-risk patients, or more frequently once a patient has known cardiovascular disease, diabetes, or is on lipid-lowering therapy. It is also drawn to monitor response after starting a statin or other lipid medication.
The panel gives a fuller risk picture than any single number, because total cholesterol alone can look acceptable while the LDL to HDL ratio is unfavourable. That is why providers order the full panel rather than a total cholesterol level in isolation.
Interpreting the number in context
LDL is the component targeted for reduction because it deposits cholesterol into arterial walls and drives atherosclerosis. Optimal LDL is generally under 100 mg/dL, with lower targets for patients who already have established cardiovascular disease. HDL works in the opposite direction, carrying cholesterol away from the arteries back to the liver, so a higher HDL is protective; levels below 40 mg/dL in men and below 50 mg/dL in women are considered a risk factor rather than a reassuring low number.
Triglycerides add another layer, with levels above 150 mg/dL considered elevated and levels above 500 mg/dL carrying a real risk of pancreatitis. Total cholesterol above 200 mg/dL is generally flagged as borderline high, but it should never be read without the LDL and HDL breakdown, since two patients with the same total can have very different risk profiles.
Critical values and what to do
A triglyceride level above 500 mg/dL is the value that demands urgent attention, because of the risk of acute pancreatitis. Notify the provider and anticipate dietary fat restriction, fluid management, and possibly triglyceride-lowering medication depending on the severity.
Severely elevated LDL, particularly in a young patient or one with a strong family history, raises suspicion for familial hypercholesterolaemia and warrants referral for further evaluation rather than routine lifestyle counselling alone. Document the result and flag it for provider follow-up rather than treating it as a standard borderline finding.
Related tests read alongside it
A lipid panel is often ordered alongside a fasting glucose or HbA1c, since dyslipidaemia and insulin resistance frequently travel together and both feed into overall cardiovascular risk calculations. Liver function tests are checked before starting a statin and periodically afterward, because statins can affect hepatic enzymes.
Thyroid function is also worth considering in a patient with an unexpectedly high LDL, since hypothyroidism can elevate cholesterol independently of diet or genetics. Blood pressure readings and BMI, while not lab values, are routinely reviewed together with the lipid panel because they complete the cardiovascular risk picture the provider is actually trying to build.
Nursing implications
Confirm the fasting status before the draw and document it, since triglycerides and to a lesser extent LDL can be significantly affected by recent food intake. Many labs now accept non-fasting panels for general screening, but if the order specifies fasting, a patient who ate breakfast needs the draw rescheduled rather than reported as accurate.
When teaching results, frame LDL and HDL as opposite goals rather than lumping them together as cholesterol. A patient who sees a low HDL number may assume it is good news simply because it is a smaller figure, so correct that assumption directly during education, and reinforce it again at follow-up appointments.
What patients ask about it
The most common question is whether they had to fast, and for how long. Twelve hours with only water is the standard instruction, and patients who are unsure whether coffee with milk or cream counts should be told to avoid anything but plain water before the draw.
Patients frequently ask why a high HDL is fine when a high LDL is not, since both are called cholesterol. Explain plainly that LDL deposits cholesterol into artery walls while HDL clears it away, so the two numbers pull in opposite directions and only one of them should be lowered.
The next step on this is the same as on everything else here: answer questions and read the rationales. Our cardiovascular practice questions are the closest set to what this page covers.
Common questions
Does a lipid panel always require fasting?
It depends on the order. Many providers now accept non-fasting panels for general screening, but if fasting is specified, the patient needs 9 to 12 hours without food, water only, before the draw.
What LDL level is considered high risk?
Above 160 mg/dL is generally considered high, and above 190 mg/dL is very high, though the target shifts lower for patients with existing cardiovascular disease or diabetes. The provider sets the specific goal based on overall risk, not the LDL number alone.
Why did my HDL come back low, and is that bad?
Yes, a low HDL, generally under 40 mg/dL in men or 50 mg/dL in women, is a cardiovascular risk factor rather than a reassuring result. Unlike LDL, higher HDL is the goal, so a low number means less protective clearance of cholesterol from the arteries.
Can a statin be started based on this panel alone?
The lipid panel informs the decision but statin initiation also weighs age, diabetes status, blood pressure, smoking history, and a calculated cardiovascular risk score. Nurses should expect the provider to consider the full risk picture rather than the LDL number in isolation.
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