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HelpTest Code LAB102 LDL Cholesterol (LDLC), Direct Measurement, Plasma or Serum
Reporting Title
LDL CHOL Direct
Methodology
Roche Diagnostics - RMH, GMC, MGH, MH, OBH
Siemens Diagnostics- SH
Elevated LDL is a risk factor for atherosclerosis and coronary artery disease.
Performing Laboratory
OhioHealth Laboratory Services- RMH, GMC , MGH, MH, OBH, SH Core Laboratories
Specimen Requirements
Submit only 1 of the following specimens:
Preferred:
Serum
Draw blood in a gold-top or a speckled-top serum gel tube(s). Spin down and send 1 mL of serum refrigerated.
Note: 1. Patient need not be fasting for this test. However, if other lipids are ordered, specimen should be drawn following an overnight (12-14 hour) fast.
2. Plain, red-top tube(s) is also acceptable.
3. Indicate serum on request form.
4. Label specimen appropriately (serum).
Alternate: Preffered for Siemens Users
Plasma
Draw blood in a mint green-top (heparin) gel tube(s). Spin down and send 1 mL of heparinized plasma refrigerated.
Note: 1. Patient need not be fasting for this test. However, if other lipids are ordered, specimen should be drawn following an overnight (12-14 hour) fast.
2. Indicate plasma on request form.
3. Label specimen appropriately (plasma).
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum or plasma | Refrigerated | 7 days |
| Ambient | ||
| Frozen | 12 months |
Specimen Transport Temperature
Refrigerate/Ambient OK/Frozen OK
Reference Values
National Cholesterol Education Program (NCEP) guidelines
Interpretation - Reporting Results
Expected Values
0-17y 10-110 mg/dL
Acceptable <110 mg/dL
Borderline High 110-129 mg/dL
High >/= 130 mg/dL
≥18y 10-130 mg/dL
Desirable <130 mg/dL
Borderline High 130-159 mg/dL
High ≥160 mg/dL
Day(s) Test Set Up
Monday through Sunday; Continuously
Test Classification and CPT Coding
83721