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HelpTest Code FLDLD LDL Cholesterol, Direct
Method Name
Quantitative Detergent Solubilization
Reporting Name
LDL Cholesterol, DirectSpecimen Type
SerumSpecimen Required
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Specimen Volume: 1.0 mL
Collection Instructions:
1. Centrifuge and aliquot 1.0 mL of serum into a plastic vial.
2. Send refrigerate.
Specimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated (preferred) | 7 days |
| Frozen | 365 days |
Reference Values
0-19 years:
Desirable: 109 mg/dL or less
Borderline: 110-129 mg/dL
Higher risk: 130 mg/dL or greater
20 years and older:
Desirable: 129 mg/dL or less (99 mg/dL or less if patient has CHD)
Borderline: 130-159 mg/dL
Higher risk: 160 mg/dL or greater
Interpretation
CHD Risk Factors:
+1 Age: Men 45 years and older
+1 Age: Women 55 years and older or premature menopause without estrogen therapy
+1 Family history of premature CHD
+1 Current smoking
+1 Hypertension
+1 Diabetes mellitus
+1 Low HDL cholesterol: 39 mg/dL or less
-1 High HDL cholesterol: 60 mg/dL or greater
LDL Cholesterol: Therapeutic goal
99 mg/dL or less if CHD is present (Optional 69 mg/dL or less)
129 mg/dL or less if no CHD and two or more risk factors
159 mg/dL or less if no CHD
(Circulation 2004; 110:227-39)
Day(s) Performed
Sunday through Saturday
Report Available
3 to 5 daysPerforming Laboratory
ARUP LaboratoriesCPT Code Information
83721
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| FLDLD | LDL Cholesterol, Direct | 18262-6 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| FLDLD | LDL Cholesterol, Direct | 18262-6 |