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Test Code LDLD LDL Cholesterol, Direct, LAB102


Liquid Selective Detergent

Performing Laboratory

St. Luke's Hospital Cedar Rapids

Specimen Requirements


Preferred: Green-top (lithium heparin) tube

Acceptable: Gold-top serum gel tube or plain red-top tube
Specimen Volume: 0.1 mL of plasma or serum

Stability: Separated specimens should be analyzed within 24 hours or kept at 2 – 8°C

               and analyzed within 3 days. For longer storage, samples may be frozen at -20°C for

               several weeks or at -70°C for longer periods.

Collection Instructions: Fasting (12 hour preferred).


Reference Values

<130 mg/dL

The National Cholesterol Education Program (NCEP) has set the following guidelines (reference values) for LDLC:

Optimal: <100 mg/dL

Low risk: 100-129 mg/dL

Borderline high: 130-159 mg/dL

High: 160-189 mg/dL

Very high: ≥190 mg/dL

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding


Useful For

LDL Cholesterol measurements are used in the diagnosis and treatment of lipid disorders such as diabetes mellitus, atherosclerosis, and various liver and renal diseases.