Cholesterol, total; Apolipoprotein B (ApoB); high-density lipoprotein (HDL) cholesterol; low-density lipoprotein (LDL) cholesterol (calculation); non-high-density lipoprotein (non-HDL) cholesterol (calculation = total cholesterol minus HDLC); triglycerides
1 - 3 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
For more information, please view the literature below.
Apolipoprotein B (ApoB): Refining Cardiovascular Risk Management and LDL Treatment Decisions
Serum or plasma
0.5 mL (Note: This volume does not allow for repeat testing.)
Spun NMR LipoTube (preferred); serum from a plain red-top tube, plasma from a lavender-top (EDTA-no gel), or green-top (heparin-no gel) tube is acceptable.
Collect specimen in NMR LipoTube (black-and-yellow-top tube), which is the preferred container. Plain red-top, green-top (heparin-no gel), or lavender-top (EDTA-no gel) tubes are also acceptable. Serum or plasma drawn in gel-barrier collection tubes other than the NMR LipoTube should not be used.
The NMR LipoTube is the only acceptable gel-barrier tube. Gently invert tube 8 to 10 times to mix contents and allow specimen to clot for 30 minutes upright at room temperature prior to centrifugation (Plasma tubes should not clot). Centrifuge specimen within two hours of collection at 1800 to 2200xg for 10 to 15 minutes to separate serum/plasma from the red cells and to avoid red cell contamination during shipment.
Note: All specimens should be centrifuged by the client, prior to shipment to Labcorp, to ensure sample integrity. Immediately after centrifugation, pipette separated red-top serum or green-top/lavender-top plasma into a transport tube and label accordingly (serum, heparin plasma, EDTA plasma).
LipoTube Serum: 7 days; Plain Serum: 5 days; EDTA Plasma: 7 days; Sodium Heparin Plasma: 6 days
All tubes: 14 days
All tubes: 14 days (Note: Triglyceride values in frozen samples with high values >400 mg/dL may be decreased more than 10% when frozen.)
ApoB serum tubes: Stable x4; NMR LipoTubes: Stable x1; All other tubes: Stable x5
Patient fasting is not required; however, in conditions where triglyceride values provide a priori diagnostic information, such as screening for familial hypercholesterolemia or early onset heart disease, pancreatitis, or confirming hypertriglyceridemia, the patient should be counseled to fast 12 to 14 hours prior to blood draw.
Unspun specimens; plasma/serum contaminated with red cells; citrated plasma (light blue-top tube); gross hemolysis; specimen received in gel-barrier collection tube other than the LipoTube
This "Extended Lipid Panel" quantifies the components of a typical lipid panel (TC, HDL-C and TG) along with ApoB by nuclear magnetic resonance (NMR) spectroscopy using the Vantera NMR Clinical Analyzer. Results from the Extended Lipid Panel Assay can be used by physicians to assist in CVD risk assessment. The principal protein component of LDL particles, ApoB, has been shown to be associated with CVD and is also an important CVD risk factor.
If triglyceride level is >800 mg/dL, LDL cholesterol will not be calculated.
Nuclear magnetic resonance (NMR)
|Order Code||Order Code Name||Order Loinc||Result Code||Result Code Name||UofM||Result LOINC|
|123544||Lipid Panel+ApoB||123477||Cholesterol, Total||mg/dL||2093-3|
|123544||Lipid Panel+ApoB||123478||Non-HDL Cholesterol||mg/dL||43396-1|
|123544||Lipid Panel+ApoB||123479||LDL-C (NIH Calc)||mg/dL||13457-7|
|123544||Lipid Panel+ApoB||123491||Apolipoprotein B||mg/dL||1884-6|
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