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Test Code LAB102 LDL Cholesterol Direct

Additional Codes

CPT Code: 83721

Methodology

 A calculated LDL is also included in Lipid Panel (LIPD).

Performing Laboratory

TidalHealth Peninsula Regional - Core Laboratory: Chemistry

Specimen Requirements

Submit only 1 of the following specimens:

 

Plasma
Draw blood in a green-top (lithium heparin) tube. Spin down and send 2 mL of lithium heparin plasma.

Note: 1. Fasting is not required for this test.

2. Indicate plasma.

3. Label specimen appropriately (plasma).

 

Serum
Draw blood in a gold-top serum gel tube. Spin down and send 2 mL of serum.
Note: 1. Fasting is not required for this test.

2. Indicate serum.

3. Label specimen appropriately (serum).

Reference Values

Adult ≥18Y

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

Pediatric 2-17Y

Acceptable: <110 mg/dL

Borderline High: 110-129 mg/dL

High: ≥130 mg/dL

Reference ranges are based upon National Cholesterol Education Program and American Academy of Pediatrics recommendations as of 2/01/2024. No reference ranges are established for pediatric patients less than 2 years old.

Note

 

LDL is calculated as part of a lipid panel as long as the triglycerides are less than or equal to 800 mg/dL. Above 800 mg/dL, the LDL is not calculated due to potential inaccuracy when triglycerides are elevated. Instead, a reflex order is placed for directly measured LDL.