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Test Code LAB102 LDL Cholesterol (LDLC), Direct Measurement, Plasma or Serum

Additional Codes

45259

Reporting Title

LDL CHOL Direct

Methodology

Roche Diagnostics- RMH, GMC, MGH

Siemens Diagnostics- OBL, MGH

Elevated LDL is a risk factor for atherosclerosis and coronary artery disease.

Performing Laboratory

OhioHealth Laboratory Services- RMH, GMC , MGH, OBL 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:

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

 

0-17 y                10-110 mg/dL
Acceptable:      <110       mg/dL
Borderline high: 110-129 mg/dL
High:                  >or= 130 mg/dL

>18 y

Optimal:              <100      mg/dL

Near optimal:      100-129 mg/dL

Borderline high:  130-159 mg/dL

High:                   160-189 mg/dL

Very high:            ≥190 mg/dL

Day(s) Test Set Up

Monday through Sunday; Continuously

Test Classification and CPT Coding

83721