LDL Subclasses


Sunquest Code:LDLSUB  
Epic Code:LAB5984Epic Name:LDL Subclasses
Methodology:Electrophoresis
CPT Code:83701, 82465
Turnaround Time:Specimens are sent to reference laboratory Mon-Sat; results are reported within 1-8 days.


Collection Instructions

Specimen:Blood
Optimal Volume:2 mL
Minimum\Peds Volume:0.6 mL
Container:Red (no gel) (Purple (EDTA), Red or gold (gel))
Patient Preparation:12 hour patient fasting is preferred.
Causes for Rejection:Heparinized plasma. Specimens from patients receiving heparin. Grossly hemolyzed or frozen specimens.


Processing and Shipping

Specimen Processing:Centrifuge and aliquot within 2 hours of collection 1 mL, 0.2 mL minimum. Store refrigerated.
Shipping Instructions:Ship at refrigerated temperature.
Test Performed at or Referral Lab Lab Sendouts  (ARUP)
Referral Lab number:50021


Interpretive

Reference Range:
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
HDL, Cholesterol 40-59 mg/dL
Total LDL, Cholesterol 130 mg/dL or less
LDL Phenotype By report
 
Use:Differentiates LDL particles with respect to size to identify individuals with phenotype A (large LDL particles) or B (small LDL particles); considered as a non-traditional CVD risk marker.


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