LDL Cholesterol, Direct
Also known as: LDL D
Use
Use to assess cardiovascular disease risk and guide therapy. LDL Cholesterol levels are a known risk factor for coronary heart disease (CHD) and are used to evaluate the risk of atherosclerotic cardiovascular disease. The test helps in determining appropriate therapeutic goals for individuals based on their cardiovascular risk profiles.
Special Instructions
Allow serum tube to clot completely at room temperature. Separate serum or plasma from cells as soon as possible or within 2 hours of collection. Transfer 1 mL of serum or plasma to an ARUP standard transport tube, with a minimum volume of 0.5 mL. The appropriate plasma separator tube or serum separator tube must be used.
Limitations
Testing is limited by accurate specimen collection and preparation; incorrect handling may lead to inaccurate results. The LDL Direct method is generally preferred for cases where triglycerides are elevated, but specific testing conditions or limitations should be discussed with a healthcare provider. Interpretations require consideration of full clinical context, including other cardiovascular risk factors.
New York Approved
Methodology
Other
Biomarkers
LOINC Codes
- 18262-6
- 18262-6
Result Turnaround Time
1 day
Related Documents
For more information, please review the documents below
Specimen
Plasma
Volume
1 mL
Minimum Volume
0.5 mL
Container
ARUP standard transport tube
Collection Instructions
Collect using plasma separator tube or serum separator tube. Also acceptable: Green (lithium heparin), lavender (K2EDTA or K3EDTA), or pink (K2EDTA).
Storage Instructions
Refrigerated
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 24 hours |
| Refrigerated | 7 days |
| Frozen | 12 months |