ARUP's Laboratory Test Directory
| 0020257: LDL Cholesterol, Direct |
| Test Mnemonic: LDL D | |
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Methodology: Detergent Solubilization, Enzymatic
Performed: Sun-Sat Reported: Within 24 hours |
| Specimen Required: | |
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Collect: One 4 mL PST or SST. Also acceptable: green (sodium or lithium heparin), lavender (EDTA), or pink (K2EDTA).
Transport: 1 mL plasma or serum at 2-8°C. (Min: 0.3 mL) Submit specimen in an ARUP Standard Transport Tube. Pediatric Collection/Transport: 0.2 mL plasma or serum at 2-8°C. Remarks: Allow serum to clot completely at room temperature before centrifuging. Separate serum or plasma from cells ASAP. Stability: After separation from cells: Ambient: 8 hours; Refrigerated: 5 days; Frozen: 1 month |
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| Interpretive Data: | |
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INTERPRETATION: LDL Cholesterol, Direct CHD Risk Factors: +1 Age: Men, 45 years and older 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. 129 mg/dL or less if no CHD and two or more risk factors. 159 mg/dL or less if no CHD. |
| CPT Code(s): | |
| 83721 |