LDL-Cholesterol (Direct Measurement)
The LDL-Cholesterol test is a two-reagent homogenous system to determine the amount of LDL-cholesterol in the body.
This test is used to measure the amount of LDL cholesterol or low-density lipoprotein (bad) cholesterol in the blood. It is typically used in conjunction with other laboratory tests such as total cholesterol, HDL cholesterol and triglycerides as an indicator of risk for heart disease. High LDL levels may increase the overall risk for heart disease.
Specimen Collection and Preparation
Serum or plasma sample in the following tubes:
Serum separator tube (gold or tiger top)
EDTA (lavender top)
Heparin (green top)
Specimen Storage and Stability
Sample should be centrifuged at 3000 rpm for 15 minutes within 3 hours of collection, and serum or plasma separated as soon as possible.
Store serum or plasma at the following temperatures:
Refrigerated: 2°C to 8°C up to 5 days
Frozen: -70°C or lower up to 3 months. Samples should be thawed only once.
Insufficient sample volume
Sample not stored at proper temperature
Frozen whole blood
Severely hemolyzed samples
Severely lipemic specimens
Specimen labeled incorrectly or not labeled
Citrate and oxalate anticoagulants
Monday – Saturday
Result available within 24 hours of receipt in laboratory
NOTE: Specimens are refrigerated (2-8°) for 7 days before disposal
Vibra Health Laboratory
1307- A, Allen Dr
Troy, MI 48083