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A 32-year-old member asked:

What does ldl, direct or dldl mean for a blood test?

2 doctor answers2 doctors weighed in
Dr. Gurmukh Singh
Pathology 49 years experience
Calculated and : Measured. Usually LDL is calculated from total cholesterol, HDL and triglycerides. If triglycerides are higher than 400 then LDL needs to be measured directly for an accurate reading. It is one of the measures of cardiac risk factors. See the site below for more info. http://www.mayomedicallaboratories.com/test-catalog/overview/200269.
Dr. Milton Alvis, jr
Preventive Medicine 41 years experience
LDL Not Cholesterol: Actual or directly measured lipoprotein values: LDL always in nmol/l, best <700, HDL in µmol/l, best large-hdl>10. See NMR particle test. Lipoproteins transport all fat molecules within the water outside cells. Cholesterol: a fat molecule made by all animal cells within all cell membranes. Cholesterol is not lipoprotein; lipoproteins carry cholesterol along with all other fat molecules.

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A 40-year-old member asked:

Can doctors tell me what does ldl, direct or dldl mean on a blood test?

1 doctor answer3 doctors weighed in
Dr. William Cromwell
Clinical Lipidology 34 years experience
Direct Measurement: Ldl cholesterol (ldl-c) is usually estimated by an equation. It can also be directly measured (dldl-c). However, because the cholesterol carried in LDL particles is highly variable, both types of ldl-c test are often inaccurate. The best measure of LDL quantity is LDL particle number (apob or NMR LDL particle number). When cholesterol and particle number differ, risk tracks with particle number.
A 39-year-old member asked:

Hello doctors, what does ldl, direct or dldl mean on a blood test?

1 doctor answer1 doctor weighed in
Dr. Gurmukh Singh
Pathology 49 years experience
See below: Calculated LDL = total cholesterol -(hdl cholesterol + triglycerides/5). If total triglycerides are above 400 this calculation is not valid. Ldl can be measured directly and the direct assay is not dependent on triglyceride levels. Ldl levels should be below 130 and in high risk persons the goal may be as low as less than 70.
Albuquerque, NM
A 29-year-old male asked:

Is an LDL direct measurement blood test accurate if you are not fasting?

2 doctor answers4 doctors weighed in
Dr. Gurmukh Singh
Pathology 49 years experience
Yes: Direct measurement of LDL is accurate in non-fasting condition. Triglyceride levels are not reliable in non-fasting state. For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Practice safe sex.
Dr. Stuart Hickerson
Family Medicine 32 years experience
Health in a pragraph
Jul 17, 2016

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Last updated Feb 28, 2019

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