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HelpTest Code CLDL1 Cholesterol, Low-Density Lipoprotein (LDL), Calculated, Serum
Specimen Required
Only orderable as part of a profile. For more information see LPSC1 / Lipid Panel, Serum
Useful For
Calculation of low-density lipoprotein cholesterol using total cholesterol, non-high-density lipoprotein (HDL) cholesterol, HDL cholesterol, and triglyceride concentrations
Managing atherosclerotic cardiovascular disease risk
Reporting Name
Cholesterol, LDL, Calculated, SSpecimen Type
SerumSpecimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated (preferred) | 7 days |
| Frozen | 30 days |
Reject Due To
| Gross hemolysis | Reject |
Reference Values
Only orderable as part of a profile. For more information see LPSC1 / Lipid Panel, Serum
The National Lipid Association and the National Cholesterol Education Program have set the following guidelines for lipids in a context of cardiovascular risk for adults 18 years old and older:
LDL CHOLESTEROL
Desirable: <100 mg/dL
Above Desirable: 100-129 mg/dL
Borderline High: 130-159 mg/dL
High: 160-189 mg/dL
Very High: ≥190 mg/dL
The Expert Panel on Integrated Guidelines for Cardiovascular Health and Risk Reduction in Children and Adolescents has set the following guidelines for lipids in a context of cardiovascular risk for children 2 to 17 years old:
LDL CHOLESTEROL
Acceptable: <110 mg/dL
Borderline High: 110-129 mg/dL
High: ≥130 mg/dL
Reference values have not been established for patients who are younger than 24 months of age.
Method Description
The low-density lipoprotein (LDL) cholesterol concentration is calculated from total cholesterol (TC), triglyceride (TG), and high-density lipoprotein cholesterol (HDLc) concentrations, according to the following formula by National Institutes of Health.
LDL =
|
TC |
_ |
HDLc |
_ |
( |
TG |
+ |
TG*nonHDLc |
_ |
TG(2) |
) - 9.44 |
|
0.948 |
0.971 |
8.56 |
2140 |
16,100 |
nonHDLc = Non-HDL cholesterol = TC – HDLc
This calculation is performed in the laboratory information system, SCC Soft.
Day(s) Performed
Monday through Saturday
Report Available
1 daySpecimen Retention Time
1 weekPerforming Laboratory
Mayo Clinic Laboratories in Rochester
LOINC Code Information
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| CLDL1 | Cholesterol, LDL, Calculated, S | 13457-7 |