Use to differentiate LDL particles with respect to size to identify individuals with phenotype A (large LDL particles) or B (small LDL particles); considered as a nontraditional CVD risk marker.
Patient should be fasting for 12 hours prior to collection.
Lavender (EDTA), Pink (K2EDTA), Plain Red, or Serum Separator Tube (SST).
Separate from cells ASAP or within 2 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.2 mL)
Heparinized plasma. Specimens from patients receiving heparin. Grossly hemolyzed specimens.
Ambient: 8 hours; Refrigerated: 2 weeks; Frozen: Unacceptable
|Cholesterol, Total||Adults: 199 mg/dL or less
Children: 169 mg/dL or less
|LDL1 (LDL 1 Fraction)||57 mg/dL or less|
|LDL2 (LDL 2 Fraction)||30 mg/dL or less|
|LDL3 (LDL 3 Fraction)||6 mg/dL or less|
|LDL4 (LDL 4 Fraction)||None Detected|
|LDL5 (LDL 5 Fraction)||None Detected|
|LDL6 (LDL 6 Fraction)||None Detected|
|LDL7 (LDL 7 Fraction)||None Detected|
|Midband A||25 mg/dL or less|
|Midband B||15 mg/dL or less|
|Midband C||23 mg/dL or less|
|VLDL, Cholesterol||22 mg/dL or less|
|Total LDL-Cholesterol||130 mg/dL or less|
|LDL Phenotype||By report|
LDL Type A: Indicative of Type A. Type A is characterized by mainly large buoyant LDL.
LDL Not Type A: Not indicative of Type A. Not type A is characterized by mainly small dense LDL. Small dense LDL is associated with an increased risk of coronary artery disease.
A desirable serum cholesterol concentration in adults is less than 200 mg/dL and less than 170 mg/dL in children. A borderline high serum cholesterol concentration in adults is 200-239 mg/dL and 170-199 mg/dL in children. A high serum cholesterol concentration in adults is greater than 239 mg/dL and greater than 199 mg/dL in children.
|Component Test Code*||Component Chart Name||LOINC|
|0080531||LDL1 (LDL 1 Fraction)||91105-7|
|0080532||LDL2 (LDL 2 Fraction)||91106-5|
|0080533||LDL3 (LDL 3 Fraction)||91107-3|
|0080534||LDL4 (LDL 4 Fraction)||91108-1|
|0080535||LDL5 (LDL 5 Fraction)||91109-9|
|0080536||LDL6 (LDL 6 Fraction)||91110-7|
|0080537||LDL7 (LDL 7 Fraction)||91111-5|
|2004029||EER LDL Subclasses||11526-1|
- LDL fractions
- LDL phenotype
- LDL Subfractions
- LDL Subtype
- Low Density Lipoprotein Subclass Pattern