Days Set Up
Daily, 24 hours
Analytic Time

4 hours

MiChart Code
LDL Cholesterol, Direct
Soft Order Code

Test Updated:


Cholesterol, LDL
Direct LDL

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All specimens should be accompanied by a requisition.

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MLabs provides all the supplies necessary for the collection of specimens.

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Test Overview

Test Methodology

Enzymatic Colorimetric

Test Usage

Evaluation of cardiovascular risks, diagnosis of hypobetalipoproteinemia, and diagnosis of abetalipoproteinemia.

Reference Range

< or = 130 mg/dL. The National Cholesterol Education Program (NCEP) has set the following guidelines for serum LDL Cholesterol (ATP III Classification): Optimal <100 mg/dL; Near Optimal: 100 - 129 mg/dL; Borderline High 130 - 159 mg/dL; High 160 - 189 mg/dL; Very High >190 mg/dL. Patient's individual LDL-cholesterol goal may differ based on the presence of risk factors for cardiovascular disease.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Offsite

Collect specimen in an SST tube after an overnight (12 hour) fast. Centrifuge, aliquot serum into a plastic vial and refrigerate.

Yellow Top Tube
Normal Volume
0.5 mL serum
Minimum Volume
0.25 mL serum

Billing Information

CPT Code
Pro Fee Code

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.