ARUP's Laboratory Test Directory
| 0050021: LDL Subclasses |
| Test Mnemonic: LDL SUBC | |
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Methodology: Electrophoresis
Performed: Fri Reported: 1-8 days |
| Specimen Required: | |
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Collect: One 4 mL plain red or 3 mL lavender (EDTA) or pink (K2EDTA).
Transport: 1 mL serum or plasma at 2-8°C. (Min: 0.3 mL) Submit specimen in an ARUP Standard Transport Tube. Pediatric Collection/Transport: 0.2 mL serum or plasma at 2-8°C. Remarks: Remove from cells ASAP. Only fasting (12 hours) specimens should be used. Unacceptable Conditions: Specimens from patients receiving heparin. Stability: Ambient: 8 hours; Refrigerated: 2 weeks; Frozen: 6 months |
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| Reference Interval: | |||||||||||||||||||||||||||||||||||||||||||||||||||
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| Interpretive Data: | |
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LDL Type A: Indicative of Type A (mainly large LDL). The mean particle diameter of Type A is greater than or equal to 268.0 angstrom. LDL Inter: Intermediate phenotype is 265.1 to 267.9 angstrom. Intermediate size LDL may be associated with an increased risk of coronary artery disease. LDL Type B: Indicative of Type B (mainly small dense LDL). The mean particle diameter of Type B is less than or equal to 265.0 angstrom. Small dense LDL is associated with an increased risk of coronary artery disease. |
| CPT Code(s): | |
| 83701 Lipoprotein subclasses; 82465 Cholesterol |