2032      LDL Direct
Specimen:
  Collect: One 7.5 mL SST  
  Submit: 1 mL (Min:0.5 mL) Serum. Submit Refrigerated. Submit in a Standard Transport Tube.  
  Special Handling: Allow specimen to clot completely at room temperature
Avoid Repeated Freeze/Thaw Cycles
Separate from cells ASAP 
  Stability: Ambient: 8 Hour(s); Refrigerated: 2 Day(s); Frozen: 2 Week(s); Incubated: Unacceptable 
Methodology: Colorimetric; Kinetic 
Performed: Mon-Fri 
Reported: 1-3 Day(s) 
CPT Codes:
83721 - LDL
Interpretive Data:
PEDIATRIC REFERENCE RANGE (under age 19 years)
<110 = Desirable
110-129 = Borderline
>129 = High
ADULT REFERENCE RANGE
<100 = Optimal
100-129 = Near Optimal
130-159 = Borderline High
160-189 = High
>190 = Very High
Executive Summary of the Third Report of the NCEP Expert Panel on Detection, Evaluation, and Treatment of High Blood Cholesterol in Adults. JAMA May, 2001.
The NCEP recommends that dietary and/or drug treatment not be initiated based on a single LDL Cholesterol result.

PLEASE NOTE: Direct measurement of LDL is invalid when triglyceride levels are greater than 1500 mg/dl.