Specimen Requirements
Title
LDL, DIRECT
Specimen Requirement
1 SST/1.0 mL serum. After 30 minutes of clotting, promptly centrifuge and refrigerate.
Fasting is Required.
Methodology
Stability
Room Temperature or Refrigerated 5 days
Reference Range
By Report*
Turnaround
3 days Set Up Mon, Wed, Fri PM
Clinical Use
The LDL Direct is a measurement of Low Density Lipoprotein by Immunoseparation/Spectrophotometry. Direct measurement of LDL is required instead of the Friedwald or “Calculated”” method whenever triglyceride values exceed 400 mg/dL. Low Density Lipoprotein has been found to be a contributor to coronary plaque formation and contributing to the incidence of myocardial infarctions.
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Test Code
LDLDS